A parking lot that is easy to enter, but difficult to exit. In the same way that a lobster trap, or lobster pot is easy for lobsters to enter, although they can not easily escape.

A "Lobster Trap" refers to a woman frequently infested with "crabs" and other sexually transmitted external parasites. Alternately, it refers to the genital region of a promiscuous and/or unclean female.

The act of pulling one's penis out of a woman's vagina while simmultaneously releasing one's balls from her anal cavity. This in turn makes a suction sound that can quite humorous. The maneuver resembles a lobster (the woman) being caught in a trap (the man) and not being released until the man blows his load and his balls decrease in size allowing the removal from her anus.

When a man pulls his genitalia through the hole in his boxers to urinate, but fails to unbutton the button. The bell-shape of the penis head then causes it to get stuck, much like a lobster trap.