To suck out semen from an ass, or less commonly from a twat. Also known as the 'mud milkshake', and the 'sludge slider'
'Jeremy was so horny last night, he begged me to give him a sludge slider while going the reach-around'
by Kung Fool June 20, 2005
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Get the fellator mug.A crude turn of phrase used to signify the extraordinary unlikelihood that something will occur. It can also be used to describe something that is taboo, disgusting, or oxymoron-ic.
The chances of getting your NCAA tournament bracket 100% correct is like felching lesbians - it just doesn't happen (although technically, it could).
by Kourics March 17, 2010
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