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1. The front of an album.
2. Opposite of the B-side.
3. The most popular song on a 45 was usually the A-Side
The A-side of the album had the best song on it.
by Mass Chaos October 29, 2003
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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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The front side of a woman/girl
Veginal fucking
Natural Straight Fucking
Her A Side is boring and loose,
I played my girls A Side last night, it was brand new - I played it for the first time.
by Sameer July 08, 2004
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Previously Spelled "Ass Hides" . def, People Who hide from women with enormous asses.
"Yo man don't be an A-side, go get them homey"
by GreatMan Riding Bucket August 07, 2003
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Is usually used in a play. Is used for inside thoughts that a character or characters are having.
Tim: Did you hear about the new kid?
Jess: No.
Jess: I hope he is hot then ill have a good date
by Meow Meow Kitty Rangers September 19, 2018
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