A low-quality vagina which smells like shrimp. Shrimp shacks are most commonly found in whore houses and homeless shelters.
Bro 1: Hey Dave, why's your dick smell weird?
Bro 2: I got some soiled twat at Hilary's last night. It was shrimp shack city.
Bro 1: You should get that checked out.
by ShrimpShackCity August 17, 2018
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When a man convinces a drunk woman to go home with him from the bar, drives her to a random house for sale down the road, takes her inside and cuffs her wrists behind her to her ankles in a bedroom closet. He pours a beer over her then he receives intense slobbery oral sex from the woman then treats her to a creamy surprise dessert filling her mouth to complete the meal. He then uncuffs her and runs out of the house disappearing into the night as she falls asleep in the closet.
Jessie: Girl, i was so wasted last night! I woke up in a random house for sale in the closet and all i can taste is sea salt and my jaw hurts. What did i drink last night?

Janice: Oh my gosh! You seriously don’t remember that guy Chad atvthe bar taking you home with him? He must’ve gave you a Willy’s shrimp shack!
by WillyTheWankTank August 2, 2023
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