Cimpin' Share definition Flag The act of ejaculating in a woman's vagina at her request. Derives from the anagram: C.I.M.P. (Cum In My Pussy) "What were you doing with Lori last night?" "Cimpin'.." Cimpin' by Payton Armour August 9, 2005 0 0 Get merch Get the Cimpin' mug. Buy Now — $32.95 See more merch