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4.
A man who is an expert on various males' nipple sizes.
Fishman can accurately tell me the size of aaron's nipples.
by wellimmikedd December 09, 2010
 
1.
Last name and nickname of Phish drummer, vacuum player, and dress-wearer Jon Fishman. He is also known as Bob Weaver.
Fishman sings Purple Rain when it's played live.
by Zachée Elliée September 05, 2005
 
2.
to choke and vomit profusely, especially on a dick
Last night Sarah was giving that kid head, and she fishmanned ALL over his shaft.
by did-ya-get-tha-fuckin-memo May 10, 2012
 
3.
Half Fish/Half Man.
Guy 1:Your Gold Fish is totally turning me on dude.

Guy 2: Dont do anything stupid, and remember always wear a rubber, we wouldnt want another Fishman.
by Elherp93 March 31, 2009