1) someone enjoying a delicious feast by delicately
nibbling (or inhaling) a man's scrotum, also known as his ball sack,
nut case, or testicle
pouch.
1) Jill: "My, my, my, I'm honnnnngry. I sure could use
a Sack Lunch right about now."
Jane: "Well you're in luck. Looks like John's out running right now, and he's wearing some awfully loose shorts."
2)
Betsy: "I would take hours
savoring his Sack Lunch."