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1.
Verb. To yelf is to prod someone in the small of the back with a turgid penis, whilst laying in bed together.

Often this is a hopeful, unspoken gesture intended to instigate sexual gratification, but it may also be a side-effect of morning glory.
Christopher casually yelfed the girl he had hooked up with the previous evening, but she was clearly more interested in sleep than morning sex.
автор: Paolov 28 марта 2008
 
2.
he whom pnws noods not very well
"Yelf u really suck at pwning noods"
автор: jamesy boi 23 сентября 2007