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1.
A combination of the two words Legit and Titties, meaning someone has an extremely nice rack or set of boobs.

Pronounced: "legit.ies", basically add "ies" to legit and you got it.
"That girl is haggard but her "legities" bring it all together."

"If she dont got "legities" don't bother."

or

"I'm goin out to score some "legities"
 
2.
A combination of the two words "Legit" and "Titties". Meaning a girl has infact Legit titties, or if your out of the loop it means a girl has a really nice rack.

Pronounced: "Legit.ies"
"That chick has some fucking legities!"

"Dude shes a butterface but her legities bring it all together"

"Im goin' out to score me some legities"
by robojmo March 23, 2008
 
3.
to be beyond legit and is just overall awesome
dude that party was so legity
by fresh prince of franklin October 16, 2010
 
4.
legitmite tits
those are some legities!
by tada123 March 12, 2011