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1.
The act of tucking a male's junk (aka twig 'n berries) down, up, and under with the ultimate goal of completely hiding said junk from any discernible bulge in the frontal region of his swimsuit area.
Deeeeeeeaaaaaaam! Look at that guy over there by the lazy river pool! You literally can't see any wein-bulge at all. He must have lampoosed.
by Meng Trondson August 30, 2009
 
2.
When a man openly states "i have to take a shit" and the walks into the nearest grocery store and bends over the urinal and takes a shit and then the man kicks the flush bar watches his lampoose and says victory. then goes to the nearest extraordinaraly small midget and says "small guy check this lampoose out" make hand gestures to the urinal.
Man: that was a glorious lampoose.
Extraordinaraly small midget: that was a boss lampoose brah.
by creig lampoose Cackia June 02, 2009