What is Slippery Whistle?
1.
When a girl is performing felatio, the guy pushes too hard on the back of the girl's head and she slides up the shaft gagging and blowing out like a slide whistle. This is usually combined with a bit of vomit and/or saliva, making the shaft slippery.
I got pissed that this chick wouldnt deep throat, so I slippery whistled her, and now I got puke all over my boxers.
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