When you finger someone after eating spicy food with your hands.
“Damn, Adam gave me a Mexican Wet Willy last night after we ate mango habanero wings. I had to douche with ranch to cool down.”
by SaraMrk June 26, 2021
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The act of giving a regular wet willy but instead of saliva, you stick your finger up your nose and then in the victim's ear.
Wow! Frank just gave Cassie a Mexican wet willy... He's been sick all week.
by Aaron The Terrible March 22, 2018
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