A man with a smaller then average age penis. Who is proud if his size. He is less then average use around 4 Inces . Sometimes quoted as having the perfect dick for anal. He is often made fun of or rejected because of his snall size. Fun size is often ment to make fun of a small penis. Offers compared to as a small size snicker bar. Not actually fun just small in size. Usually guys with a small penis are good with oral but not always
My boyfriend has a snaller then average penis . I call it fun-size because it's cute
by Sizeprincess September 8, 2021
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A way to describe a small penis. Usually around 4 Inches not tiny but definitely below average
Beth: I finally had sex with with Ron

Debbie: did he have a big dick?

Beth: no he had a little fun size dick

Debbie: I'm sorry 😞
by Size is everything September 20, 2021
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A penis that is smaller then average (less then 5 inches) not tiny like a micro-penis but definitely small in size. It can still pleasure a women but not one she will brag about to her friends. A favored size for anal sex because it's never a painful size
My boyfriend has a fun-size dick. It's not big its smaller then average. Compared to a little tiny snicker bar
by Bi-polar bitch September 11, 2021
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