To shag someone. Usually used as a response to someone pointing out a person or a body part of there’s.
Look at her arse
Oh yeah, wallop
by Walloper September 7, 2022
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“Let’s get right stuck into some wallop tonight boys”
by Lynny79 October 18, 2021
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A word used by Harry McKirdy , who knows what it means.
Looks good , propa wallop 🔫🤪
by cafcjake May 22, 2022
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When a group of men hit you in the face with their dicks
I have a black eye from the Kentucky Mushroom Wallop the football team gave me
by Spidey81 January 25, 2018
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Tale of extreme fabrication, culprits are usually baked.
Bruv that's codswallop!

Nah bruv, that was a Wallop of Cod!
by Fatheroftitan November 11, 2017
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When a Muslim country fails at something. Its the equivalent of saying 'You got knocked the fuck out" (from the movie "Friday") when someone 'kicks your ass'. Rhymes with Us-salam-allik-Oom.
Pakistan got Us-Slam-Wallop-Boomed out of Kargil heights.
by Wansapanatyme February 5, 2023
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