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The sound a horse makes instead of a neigh, at least according to Spongebob Squarepants.
Found in the episode My Pretty Seahorse, where Spongebob finds Mystery the seahorse.
Mystery: neighhhhhhh
Mr. Krabs: What was that?
Spongebob: Just practicing my impression of Mystery, Mr. Krabs! Weesnaw!
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2
Depends on the region of the United States. In the South and Middle America, it is an unmentionable body part. In the West it is a mythical sea horse. In the East, it is an exclamatory remark. It can also be used as a term of affection.
In the South: Uh oh, my weesnaw is really hurting. I better go get this checked out.

In the East: Weesnaw!! The sox won again!
In the West: someday, I hope to catch a Weesnaw.

As a term of affection: I love you my Weesnaw
by Snawlover October 21, 2015
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3
Spongebob : No Mr. Krabs.. that was uhh just me doing my imitation of Mystery. Weesnaw.

Mr. Krabs : Well then.. keep working on it,cause it's terrible.

(Those probably weren't the exact words but it's as close as I can remember.)
by shuffles August 02, 2006
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4
Originated from the television show SpongeBob SquarePants, it evolved into garnering a sexual innuendo surrounding the term and eventually became a nickname for the genitals (usually male but can be attributed to female as well) or ejaculation.
"Dude, Victoria was sucking my weesnaw and I couldn't even get hard"
"Did you even cum?"
"Yeah, I weesnaw'd in her mouth soft!"
by AlfredSack June 21, 2017
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6
A word used to express your love for spongebob, and horses more specifically sea horses
Cant wait to hop in that bed and pound that girls weesnaw
by Hoe Slayer Nibba Player February 22, 2018
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7
An amazing animal found under the see. Usually pink and yellow. can also be used as a compliment. " your looking very weesnaw today "
They are kind and very friendly animals once you get to know one.
by Earl--- March 22, 2009
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