when you lube up someone's anus and squeeze your balls inside. then try to keep them from jumping out, like a dog in a bathtub.
Dude!Sandy was walking real funny this morning, what'd you do to her bro?!?!?!?

well man i fucked her, sucked her tities then broke out the astroglide and gave her that dog in a bathtub treatment!
by fuzzyknubbles July 27, 2008
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When a man fucks a womans pussy with his balls in her ass.
by Five Seven February 6, 2008
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The act of trying to insert one's testicles in a girl's asshole.

Huff stuffed his dogs in choads bathtub
by maD iLL soN May 21, 2003
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Trying to put your penis and balls into a woman's vagina. Trying to keep them in is like trying to keep a dog in a bathtub.
That bitch was so loose, I had to put the dog in the bathtub.
by Ryan the Man May 13, 2006
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The FULL insertion of one or more testicles into a woman's butthole...the term was coined based of its level of difficulty in both pain and practicality, i.e. getting a dog in a bathtub. Norf
"I had some serious nerve damage after that "Dog in a Bathtub!" - Norf
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inserting testicles into a partners anus. Why? becuase it's just as hard to get a dog in a bathtub.
I gave her a dog in a bathtub and then made her lick my shitty balls.
by MELVIN April 3, 2005
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It is what happens when Number Two (or five these days) inserts his enormous steel plated testicles inside an unsuspecting minx's beeeeeeehind and shakes them vigorously. His balls give off such friction that authorities have often feared another Chernobyl type incident.
After waving to the crowd, Number two reveals his massive testicles and pops them fair into the arse of Mimi McPherson. While she smokes crack. And her crack smokes as well.
by Mongobucket May 3, 2005
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