Hahnjob Share definition Flag An insertion of a fist deep into a woman's anal cavity and repeatedly thrusting until the woman ejaculates. Very few people are capable of performing a successful Hahnjob without sustaining bodily harm. Hahnjob by Assfuckin June 16, 2011 0 0 Get merch Get the Hahnjob mug. Buy Now — $32.95 See more merch