honestly, i wasnt familiar with it until just now when i googled it...
Bullshit!! :0
Anyone above the age of 20 knows who the Duke is!!! and you're plenty old enough to have played the first 2 nukem games! (hell, I've played them both)
You seriously had no idea who Duke nukem was?!?
How's about
"I ain't afraid of no quake!"
"Hmmm..That's one doomed SPACE MARINE!"
"Nobody steals our chicks...and lives"
and many many more priceless and well timed one liners!