A more twisted version of the wet willy. It's executed by spitting on your own penis, and then insert said penis into an unsuspecting victim's ass.
"I really wasn't expecting him to give me a wet wally when my pants were down... it hurt for a week."
by KingDouche January 31, 2008
When a female inserts a man's penis in her mouth for the sole purpose to wet it with saliva so it can be inserted easier into her vagina.
Josie gave me the best Wet Wally last night.
by Megassaurus April 20, 2016