What is Guesh?
1.
Interjection - showing extreme approval over a female's appearance.
Verb - the act of male climax
Young, in-shape woman walks past two eager young men. First young man turns to the second and nodding towards the young lady says "Guesh!".
Or
Kyle: "How did she look today?"
Dan: "She was wearing that blue dress again - thought I was going to guesh!"
See