A meatball sub is when a male places his pubicle sac and/or testicles into a woman's vagina. Preferably done during the menstrual cycle so that some sauce can accompany the meatballs.
John: Hey man, how did your night turn out?

Paul: Pretty good, I ended up giving that chick a meatball sub

John: Nice!!!
by Akostellem December 15, 2009
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To any unsuspecting person who does not attend NKEC it's just a sub with meatballs, tomato sauce and melted chesse.
But to anyone who does attend NKEC, it is the holy grail of food at the low budget cafeteria. It is a "crusty on the outside, tender and soft on the inside" sub stuffed full with scruptious meatballs, overflowing with delicious tomato sauce and it is all held together with the perfect amount of motza cheese.
On every third thursday of every month you can by this treat and get a small slushy and chips for a meazly $3.25!!!
Jeff! I'll trade you my first born child for that heavenly looking meatball sub!!
by Bent Himself June 17, 2003
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When you grab your man's balls twist them sideways and place them in his asscrack.
If your man has a tight sack he will cry like a bitch if you give him a meatball sub.
by Lusty Corpse August 22, 2020
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Used as a verb for a woman that is needs to gain weight. Can be used as a noun on its own to indicate a woman is attractive, but too skinny.
She'd be pretty hot, but she just needs to be meatball subbed.

-or-

guy A: What about her?

guy B: Meatball Sub...
by Zatoro August 7, 2011
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the act of shitting in a girls vagina then putting ur balls inside the vagina
hey dude i gave ur gf a alabama meatball sub
by doom sargeant November 14, 2010
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When a man fits his cock between a femals tits while she is laying down the female rubs her boobs back and fourth while another girl takes a shit on the girls chest making it look like a meatball sandwhich
I got gonorrhea from my Mexican Meatball Sub!
by wld153 January 15, 2014
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