A small-sized hangover, usually comes with merely a mild headache, a vague fatigue, and little or no sense of regret and/or shame.
I didn't really drink that much last night, but I think I've got a leanover. Wtf!
by Jordan VB September 7, 2007
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To give a person a blow job, as they are driving.
The slut gave leanovers for rides to the mall.
by Mrs. Amazing November 21, 2006
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The equivalent of a hangover, but when you've been really lean the night before. Characterised by a lazy fatigue, forgetfulness, and a mild desire for another joint (See Wake n Bake.)
Man, I've a stonking leanover, think I might roll another today.
by _Brightside_ August 2, 2008
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