Mild/humourous euphemism for anus.
Excuse me, my porthole is bursting.
by ud40 February 23, 2005
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To have penetrative sex.
I can't wait for Saturday night, I'm gonna put the twinkie in the porthole!

Last night, Garry put the twinkie in the porthole.
by testicheese December 24, 2019
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gay termonlogy used to describe one man schlonging another in the ass.
eric "porthole pirated" jose last night. just shortly after giving a rusty trumbone.
by trevor340 February 11, 2009
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Cleveland Porthole: The elegant act of shitting in someone’s tracheotomy hole.
Can you please shit in my tracheometry hole? It’s been a long day.

Cleveland Porthole: shitting in that hole boi
by Dudeguyhomie August 5, 2018
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mexican porthole is the transport module that resembles the shit house used by construction workers across america.Legend has it mex workers transport back and forth from mex to u.s.
where the hell did all those illegals come from?
must have flown on the "mexican porthole " they were'nt here yesterday!
by bubbles may September 8, 2008
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When you shove your tongue so far down your girlfriend throat, she chokes.
Girl: Hey Babe
Boy: (Shoves tongue in throat)
Girl: WILLY PORTHOLE!
by TanyaBo April 28, 2011
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When you take a dump so large and exhausting that it takes a while for your anus to fully return to full tension.
There is a danger of water getting in if you leave your porthole open
Holy f**k that was a tough one, I think I have an open porthole
I better not take a bath, I might fill up
by CaptainInnuendo August 8, 2017
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