Da term "smooch-mooch" could also refer to da act of offering to suck face with someone in exchange for his providing something dat said affectionate-gesture-offerer really should pay said prospective helper for.
The worst of the worst, people who never want to pay and try to make others give them things they don’t deserve or haven’t earned
Paxton Cava is such a mooch, he never orders food and always asks for everyone's leftovers. He's such a mooch he stands at the lunch tablewaiting for people to leave things over and then he asks to eat them.