Unhygienic anal sex resulting in the transfer of fecal matter from the dirty anus of the partner getting banged to the penis of the unsuspecting penetrator, most often occurring between gay males.
Ted and Randy went back to Ted's trailer for some box wine and some serious poopie dickin.
1. still "putting out" after a bad date
2. sleeping around with complete disregard for STDs/STIs
Roommate: So, how did your date go last night?
Girl: It was awful. My date was super obnoxious and kept hitting on other girls at the bar, yet I still decided to sleep with him.
Roommate: Oh girl, you were ick dickin!
To take advantage of offers or freebies not orignally intended for the receipent using shifty or questionable methods. Also, to steal others ideas and pass them off as original to gain favor or popularity.
BZ likes to stand behind the Blackjacktable at the casino to be weasel dickin' his drinks.