The rule of being a bull is to not just fuck, but to cum inside. You're not just there to be her dildo and to shame her husband, you're there to leave her pussy sopping with her juices and your cum as deep as you can get it. You're using his wife from start to absolute finish. (also meaning if you got another load in the barrel, you keep going.)
Good thing, there isn’t an annoying and persistent fucking moaning noise being made in the background throughout the entire goddamn video. That might ruin it.
an seveninchesofgirth :Funny I "tried" to be a bull once .. they thought I had a big cock .. the husbands was a little bigger .. so the wife cuck cucks me and now I'm on the bottom with his cum on my face literally .. we were kinda laughing as she licked the cum off .. lesson learned for most couples I may not be big enough to be the bull as you stated .. but I get approached often when I travel