name smooshes: endlessly amusing, also less than clear for threesomes

I have just seen a Kirk/Spock/McCoy fic tagged as "Mckick". Granted, on the story itself rather than the journal's tags it was written out, so don't know whether this was just for tag brevity or is really used as pairing name proper somewhere, but even with knowing the pairing it took me a bit to decipher what this tag on the post meant. Smooshes just get the more confusing the more people are involved.