Top definition
The act, or action, of placing one's ass in front of an erected penis to portray an eclipse.
My girlfriend said she wanted to have some sex, but i told her lets do it the boner eclipse way.
by Jason & David August 28, 2007
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2
When tucking ones penis between the legs, and one achieves an erection, causing said hard penis to poke at the anus of said tucker, creating a condition known as a boner eclipse.

See also fuck your ass.
Bill: I got a boner eclipse the other day.

John: What the hell is a boner eclipse?

Bill: Where your dick goes so far up your ass it turns into a boner eclipse.
by Boner Jammer September 05, 2008
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