adj. Payback-y; blowback-y; karma-y.
Real citation: “FORESHADOWY GOODNESS: When Giles tells Buffy that this is not the worst mistake she'll ever make, it is very similar to the scene later on in the season, in Innocence, after Buffy has made yet another mistake, of a far more repercussiony nature, in sleeping with Angel and thus releasing his inner beast.”
Made-up citation: “If God is truly a repercussiony God, then why do I have to disembowel my enemies myself? I could use a little help here, big guy—hint hint.”