1. Spitroast, where one guy fucks the bitch's cunt or ass while the other fucks her mouth.
2. Double penetration, where both guys slide their cocks into the bitch's cunt or ass at the same time.
3. Two up, where one guy fucks the bitch's cunt and the other fucks her ass.
Whatever method is used, the guys should aim to reach orgasm simultaneously. If they achieve this they high five each other as they cum over the bitch.