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1.
Awesome Loser! An endearment for loved ones exhibiting silly behaviour.
(someone you love does something amusingly silly)

You: Aaw honey, you're such a wooser!
by Elgondor May 18, 2011
 
2.
A loser; spoken thus by a small child who knows one when he sees one.
Keddy tennidy...wooser!
by harry flashman July 10, 2003
 
3.
Someone who woos and loses. He is a big Wooser or someone who has a lisp trying to say he is a big loser.
I can't bewieve what a big wooser I am!!!
by jcmccauley October 06, 2008