The act of fisting someone with both fists through the vagina and asshole and giving yourself a fistbump during the process.
John: Hey Georgia, later you and me going to do a little double fistception later?
Georgia: I can't, I had Taco Bell earlier. Maybe some other time when I don't have the runs.
Georgia: I can't, I had Taco Bell earlier. Maybe some other time when I don't have the runs.
by Allybama July 29, 2017