a smell similar to fish left on the end of your nose after going down on your female partner.
"So bob i ate out my wife's pussy last night and now i have a serious case of trout snout."
by Sherman Cassidy October 08, 2004
A man who has a mustache for the sole purpose of going down on a woman, not washing his face, and smelling her on the mustache all day.
Most state patrol men have a troutsnout.
by Jrickso December 28, 2008