Definition of shittest:
(n) :
Alternative form of shit test. [(seduction community, vulgar) A conscious or unconscious challenge posed by a woman to a man to determine his suitability as a romantic or sexual partner consisting of acting in a cold, unfriendly, provocative or otherwise defiant manner and seeing how the man reacts and whether he is able to stay unfazed.]
(v) :
Alternative form of shit test. [(transitive, seduction community, vulgar) To target with a shit test.]