What is Seadonkey?
1.
A girl who is unattractive due to face, weight, or personality who is notoriously difficult to get rid of. A girl who doesn't get the obvious hints that they are not wanted.
Man: Gee, you seem pretty tired, I will call you a cab.
Seadonkey: Oh, I'm not too tired. I can stay.
or
Seadonkey: Thats ok, I will just crash here.
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2.
A extremely large and fat woman who fronts like she is hot and sexy. Related closely to the "beached whale."
If you go to the fill in station to drink you have to be careful because the seadonkeys are out in full force.
3.
a girl so ugly and hideous that normal words cannot describe her so you must resort to referring to her in the terms of manatee or some water elephant type creatures
i saw john last night heading home from the club with that seadonkey. man he must have been wasted!
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4.
A girl that is extremely ugly
"Hey did you see that girl Courtney that married Jeff?"
"Yea that bitch is a total SeaDonkey"
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