foPSYCH! Share definition Flag an exclamation following a mathematical joke; tricking someone mathematically. "No quiz today!" "Yesss!" "FoPSYCH!" "damn." foPSYCH! by samlikesicecream March 26, 2010 0 0 Get merch Get the foPSYCH! mug. Buy Now — $32.95 See more merch
