I always use the space between my ears for thinking.
Back to topic, do other people use "plink" to refer to doing one target one point of damage?
It dates back, as far as I know, to Tim the sorcerer in another Card Game that will remain nameless but man I wish I had some of the Moxes I traded away back in the beginning.
I use "ping."
I use plink to denote 1 or 2 points of damage, especially enemies who kill you by that method. If we were to formalize it, though, plink = 1 damage is good :D
That's always been "dink" for our group - I have no recollection of why we chose the word, but the background is the same as you described. 
And yeah, we still use it. 
I think "plink" is used for one damage, but "ping" or "dink" are used for hitting an immune target, or the damage being reduced to 0. As in "The attack pings off [target]"
My "ping" came from the Prodigal Sorcerer from MtG:
Yeah, unfortunately I started playing Magic before there was any kind of Internet standardization of things like that. We called what Tim (AKA Prodigal Sorcerer) did a "dink" because it was funny (to us). Later, when the Magic community on the Internet started smoothing out all the differences in how we played, we just never stopped using "dink". 
Hmmmn (getting off topic), so it sounds like the Tri-Solvent Vat does Pling-Dink-Ping damage. :)
Rabit - you and I both.
I use NOPE (TF2 Engineer voice) to refer to damage that is blocked completely, either by immunity, meat shields, standard DR, what have you.
I never heard "plink" before I came onto this forum, but now I'm inclined toward using it. Although I make a lot of other assorted sounds during actual RL play (not on every hit, but not restricted to just 1 damage hits either; it can befor anything that hits anything for any amount, depending on my mood) - "SPANG!" is my favorite, but "dunc-!" and "bung!" also appear now and again.
That makes me think of this…
I use "plink" for (usually) one point of damage just because...erm...I do. I can't really remember why that word. I've probably just seen it in many of the various computer games I've played over the last two-and-a-half-ish decades.
My RPG club is starting to refer to the game as "Centipedes" fairly regularly now, due to me saying it occasionally (and my Centipedes of the Multiverse t-shirt, freshly printed for the London game day).
In fact one guy asked last week if we could play 100 Legs. I'm ashamed to say this confused me for at least 15 seconds.
Well, taking "Legs" as a particular character's nickname, there could technically be three (four, when the new promo card comes out) Legs in Sentinels ;). Actual centipedes, I believe, don't have a hundred legs - this came up on QI. I think the nearest was about 96 or something. Similarly millipedes don't have a thousand legs ;).
Yeah, Millipede is the real misnomer, they have an average of 200 legs (4 per body segment). But centipedes often have as "little" as 30 legs.
Cantipedes can have anything from under 20 to over 300 legs, but they are always in odd numbers of pairs.
It wouldn't really have worked if he'd referred to "anywhere between 20 to 300-ish but stereotypically a hundred legs which isn't true as far as we know". that would have confused me for at least 17 seconds, resulting in a net loss of more than 2 seconds because "100 legs" is significantly quicker to say. ;)
That sounded interesting, so I looked it up. According to Wikipedia, that tidbit about an odd number of pairs is only true for epimorphs, which is some but not all centipedes. It seems like it includes all centipedes with a large number of legs, however, which if correct would then mean that there are no centipedes with exactly 100 legs.
(It also seems to depend on exactly what you call a "leg". I just learned about the forcipules; are they "legs" or not?)
All-American Tempest - Tempest: Sacrifice (because the lighthouse in the background looks like the American flag is running off of Tempest's name).
Tempest's corpse - incapped Tempest can prevent all damage dealt to heroes of one type.
Not like… that movie I hope… 
[barf]
No, really not.
Although I forgot all about the movie until I started googling for centipede images to create the artwork for the shirt. I added a -human search term pretty damn quickly.