USSSH! 

You give a little USSSH! at that moment everything comes together.

Just completed 50 one-armed press ups. USSSH!

USSSH! by ussshgirl1 January 23, 2011

Ussss 

A sound made to display a positive outlook on proceedings.

Heppell: yeah, went to the bookies today and put £50 on knot in wood at redcar, usssssssssss.

Kendy: just found £20 ussssss!

Ussss by Beester April 28, 2008

usssy 

something or someone is referred as when he or she acts dumb

stop being an usssy

usssy by usssy June 12, 2015

Usss

To exhale esp. after sitting or lying down to relax or chill

*lies down* ussssssssssssss

Usss by Uss Man August 15, 2003