"pack away the beef"
My next door neighbor and blondie the dyke don't-I don't know what the most polite euphemism for what they do would be, but it doesn't have anything to do with beef or porking...
OMG. Keep those binoculars on. We have to know about your neighbors. It's important in here. LOL, but true.
"Bumping doughnuts" would be the operative euphemism, though its degree of politeness is up to debate.