When a guy cheats on his wife so that he can have anal sex with his girlfriend, he is a Fuckanus.
"Jesse is cheating on his smokin hot wife with HER? Nasty! Why?" says Jesses' friend.
"Because his wife won't let him poke her in her bunghole." answers Jesses' other friend,
"But SHE will!!!" hahahaha
"Wow! He is such a total Fuckanus!" replies Jesses' friend.
"60 Fuckings" is a term used when a friend is relating a slightly unbelievablestory, and you finish the story for him, jumping to an obviously fabricated conclusion.