Boobs you wouldn't really think are big from an "in the shirt" perspective, but when released from captivity they sneak up on you and are huge. Like a ninja
I didn't realize her boobs were that big until she took off her shirt, they were totally big and amazing. I love her ninja boobs.
by Brian Street Team March 24, 2009
1. Breasts of a small caliber; often found of female ninjas
2. Tightly contained breasts; often times occurring whilst wearing a sports bra.
3. Boobs that appear small while wearing clothes; but are actually not in the nude.
2. Tightly contained breasts; often times occurring whilst wearing a sports bra.
3. Boobs that appear small while wearing clothes; but are actually not in the nude.
Damn, that shortay has some kick-ass ninja boobs.
Girl your ninja boobs, snuck up on me like Jake Gyllenhaal on Heath Ledger.
Girl your ninja boobs, snuck up on me like Jake Gyllenhaal on Heath Ledger.
by Ninjaboobgirl4U January 25, 2010
A person who is very subtle or sneaky when it comes to looking at a female's breasts.
Used as a compliment by males and a warning or an insult by females.
Used as a compliment by males and a warning or an insult by females.
Girl1: Bob said that he didn't masturbate. He's so lying.
Girl2: I dunno. Maybe he's telling the truth. I mean, I've never seen him look at a girl's boobs before.
Girl1: That's because he's probably a boob ninja.
Girl2: I dunno. Maybe he's telling the truth. I mean, I've never seen him look at a girl's boobs before.
Girl1: That's because he's probably a boob ninja.
by Littleman29 February 25, 2010
by The Waffler December 9, 2005