Ass to mouth. It's the dirtiest act imaginable -- but you're going to be doing much more than just imagining. Get out two dildos, bonus points for using the biggest ones you own. Lube up the first with your spit, sucking the length all the way down your throat, and then plunge that cock into your asshole. You're going to skewer yourself with dildos, one in your ass and one in your mouth, switching places whenever I ask. How does your ass taste? How does it feel to fuck your throat and swallow your own anal juices? You just love being a filthy boy for me, don't you.