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1.
To creep; to look at sexually; To creepily stare in awe
The lonely old man was pedoing at the swimsuit models in Miami.

The student was pedoing when his crush walked by
by swegmaster September 17, 2013
 
2.
The act of being best friends with a person while having an affair with his or her husband or wife and not admitting it.
My boy is in the act of pedoing with this chic down the block.
by heyhayhey March 18, 2010