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"Как стать шашлыком?"
Новая книга из автора Калинка Винний. :o :o :D

Exactly. Even Kalinka and Vinnie can be awful. Consider:
She showed him her kalinka.
He slipped her a vinnie!
I got barmaley'd last night. :lol:

All these though, do have only a CONTEXTUAL meaning of sexual activity. I can think of dozens of other scenarios where you could use them, and they'd be perfectly fine and devoid of any sexual...

Lingvo lists it as "• валять дурака — to idle." You could also use more colloquial expressions like "to mess around," "to dink around," "to lie around," etc., just like Misnomer said.