Definitions by BigPhatBoi

fat swany

The act of shoving a large food item in your pants to create the illusion of having a big penis. Usually a whoopie pie.

That kid at the bowling alley looked like he was trying to pull of a fat swany!

The act of shoving a whoopie pie down your pants creating the illusion that you have a huge dick.

That bitch last night gave me a HUGE fat swany!