En Piss Ant

In chess, en piss ant (French: ɑ̃ paˈsɑ̃, lit. "in pissing") describes the capture of an enemy pawn on an adjacent file that has just made an initial two-square advance.

300 rated player - "Bro, I think I just saw a glitch on chess.com, Someone took my pawn with theirs when it wasn't even on the right square"

100 rated player -"Google en piss ant"