A large penis.

Popularised by Cardi B with her song 'WAP' and unreleased track titled 'Big Mack Truck'
by Insert First and Last August 14, 2020
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A term for above average large breasts. Band sizes larger than 36 and Cup sizes well past F (DDD). Usually cannot buy bras from traditional stores and must custom order or have imported. Cup sizes can range from G to O usually.
You see I’m a 40L, I have a very uncommon bra size. I can’t just send my Mack Truck Mamories out to every guy who smiles at me...

They’re real and they’re spectacular.
by LilyDeflower February 6, 2021
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like a regular lobotomy, but performed with a Mack truck instead of surgical tools ensuring a quick and successful operation
I think it's time for me to go get a Mack truck lobotomy
by Markimedes September 30, 2023
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Unlike throwing a hotdog down a hallway which means u banged a really loose chick, "Like Trying to Drive A Mack Truck Down a Hallway" means that u had penetration problems or she was just really tight
For example my cousin was unable to bang his girlfriend because she was to tite so that situation would be described as Like Trying to Drive A Mack Truck Down a Hallway
by solvy98888888888 June 25, 2010
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A ugly giant fucking chick that you wouldn’t put ur dick in even if blacked out drunk. A chick who is built like an elephant.
1. Did you see Jay’s she was an absolute Mack truck
2. Joseph fucked a Mack truck last night
by John Joseph Maher February 20, 2023
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