a sexual innuendo referring to a fictitious stint in Vietnam
Person A: I can't believe Granny Mordrey is gone...RIP
Person B: reminds me of my time back in 'Nam. got it on, then was goonneee like a mo funker....OW!...village never knew what hit 'em
Person A: you weren't in 'Nam...you weren't even born till '92. Anyway shut up and watch the funeral.
Person B: I was 'In' 'nam...at least that's what she said her name was.... shhmuung!
Person A: stop with the 'Nam-uendos you insensitive bastard!!