When two people making out tenderly while jam slowly falls on them.
Ramsey : What do you want to do right now?
Kerry : I'm down for anything personally.
Ramsey : Would you be down to Smuck?
Kerry : Hell yeah, Let me get the jam!
A learned man of Naperville, IL - Tony Casciano - defines "smuck" as the foreskin removed during a bris.
The mixture of slightly melted snow and sand on the road or parking lot. When you walk through it, it sounds like "Smuck smuck smuck"
I hate shoveling this smuck out of the driveway!
When something or someone smells and sucks at the same time.
Redneck 1: Boy howdy that sure did smuck.
Redneck2: yeah its much better when its your sister, eh?
Someone experiencing porn literature addiction.
My friend is a real smuck, always stuck on that smut. I don't even mention their ao3 tags.