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1.
Dating someone for personal gain when you have no interest in having sex with them or being in a relationship with them.
"You know she is schmucking him for bill money, right?"

"She is always schmucking some unsuspecting dude for free meals!"
by Princs January 07, 2012
 
2.
Sitting and/or laying down while doing absolutely nothing without sleeping. In between chilling and napping. The more you schmuck the less you want to chill and the more you want to nap. To Schmuck.
Brian: Where is Greg?
Eric: Greg is schmucking in the bedroom. He got up showered and ate then started schmucking.
by Eric and Greg July 10, 2008