gauchies 

underwear, usually male. Sometimes called gauch.

I can't find my gauchies!
My gauchies are too tight.

gauchies by lar3ry September 1, 2008

guchies 

underpants, scivvies.

Off came her guchies and it was game time.

guchies by Jimmythehorse June 22, 2008

Gaunchies 

Any form of absurdly tight underwear that extends above the belly button, usually worn by, some middle age woman, and is particularly famous amongst older generations.

Jessica- " Sometimes i feel so old."
Sean- "You think your old now, wait until your my Grandmas age. Your taste in underwear will go from thongs, to Gaunchies."

Gaunchies by yourmomwearsgaunchies November 9, 2010