I love watching them in porn. I like 'em when they're nice and sloppy, like when the guy's been saving his salvo for a long time and then he moans from the bottom of his throat cuz he's really feeling it as he nuts inside her cunt and she screams from his internal bursting...then he pulls out and there's this gushing, pearly river running down her crack...but in porn they prefer to show just that more than having the guy suck/lick the girl afterwards...

The last time I actually did it personally was one of the most intense orgasms I ever had...and sucking her pussy afterwards made me ready to go again. Ahhh, the joys of having a longtime steady...