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When you stick your willy in a jar of dill pickles and then you slap someone across the face with it.
The first person who passes out at the party gets a Dilly Willy tonight.
by Maupzor December 30, 2010
When you spit on your dick and stick it into someone's ear.
I can't believe that Dedrick just gave Danielle a dilly willy!
by the most boopinest beat alive August 06, 2014
1. your dick is dangling out
2. your fly is open
1. Shit son no one wants to see your dilly willy!

2. God damn, zip up your dilly willy!
by Winniee_leto March 09, 2010