A penis, specifically a bulbous or "chode" like member. Less of a "shlong" more of a "wang".
"Slap a fat one in your mouth and STFU"
53๐ 28๐
1) large penis 2) fat chick
I slapped a fat one with my fat one!
35๐ 18๐
An overly sized penis (like my own).
Nice hair faggot. Choke on a fat one fucker!
18๐ 69๐
The fat one is the proverbial "big, fat cock," usually used to describe something bad, often added on to "sucks" or "blows".
1:That song blows the fat one
2:this party sucks the fat one
3:it licked the fat one
15๐ 8๐
One living entity of large volume especially in the measurement of weight.
"Over there, she's a fat one alright!"
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