Top Definition
A Baltimore break in is the act in which someone penetrates an unknowing victim. As in a person bending over with no pants on, or if in the shower. Not to be confused with the southern trespass which is sneaking in the backdoor while have sex. The Baltimore Break In requires stealth, speed and most of all courage.
She bent over to pick up her underware and Alan performed a Baltimore Break In on her. She screamed.
by Andrew Linton December 06, 2004

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