Top Definition
A synonym for a man's genitalia, possibly erect, resembling the shape of a banana.
Ralf: Whoa Jeremy, you can totally see that guy's manbanana through his speedo.

Jeremy: I always kinda figured you were gay, Ralf.
by i do cocaine April 25, 2008
2 more definitions
5 Words related to manbanana
A banana with human like characteristics such as eyes, legs, arms, mouth, etc. Often associated with wisdom, joy, or happiness.
Man, look at that spectacular man banana walking around Madrid.
by Dean Hood March 27, 2010
The sexual organ on the male body. Also known as penis
That guy had a small man banana.
by GenocideGuy August 19, 2008

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