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Commonly located in business parks across commercial America, these trees blossom in early spring and produce beautiful, multi-petaled white flowers - which happen to smell exactly like semen.
Woman: Hey Darnell, do you smell what's coming from these trees that line the boulevard? I can't seem to put my finger on what it is, but I absolutely love it!

Man: Those are semen trees, Tina. I always knew you were a fucking whore.
by Arthur in Hoboken March 26, 2016
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Nov 27 Word of the Day
A stupid person; it refers to the lack of surface area on an individual's brain. The general thought is that the more surface area (wrinkles, creases, etc.) a brain has, the smarter the person is. Conversely, a person with a smooth brain (no wrinkles) has less surface area and would therefore be stupid.
That fucking smooth brain put his shirt on backwards again...

That smooth brain is dumber than a pile of shit.
by Tip Tank May 14, 2011
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2
Another name for the Bradford Pear, and ornamental pear tree. Characterized by greenish-white flowers which smell like a cross between old semen, dirty vagina, and rotting fried shrimp. Common throughout the South, these trees are pleasantly located near eateries and other fine establishments.
Oh darn, there goes my appetite, for the semen trees in front of the South Campus Dining Hall are in bloom.
by tomatoboy April 07, 2005
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3
Also known as "Pyrus calleryana Chanticleer" trees (or ornamental pear trees). They smell like jizz, especially when in bloom. People plant them all the time around the Bay Area. Yay. Let's make the whole neighborhood smell like used sex rags. Nice one.
"Oh, great. The google parking lot is encircled with semen trees".
by Torsky March 10, 2008
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