A condition that occurs when a pair of boobs are shaped in such a manner that they both point out far to the sides, leaving a large gap in between. This generally unattractive condition thus makes the boobs resemble a pair of penguin feet.
Boobs suffering from penguin tits are generally not round in shape and instead flop to the sides like flap jacks.
"Dude, her boobs looked good in that shirt, but once she took off her push-up bra she had total penguin tits. It was an illusion bro."