When a woman who normally wears clothes that do not show off her fine ass suddenly wears garments that declares surprisingly to the world - baby got back!!! The usual culprits of said ambush are tight jeans, short shirts, and yoga pants
Dang did you see Cynthia last night? That skirt she wore caused a severe case of ambush booty from out of nowhere!!
An ass so phenomenal it stops traffic, turns heads, and makes you lose track of time. Often associated with the unfair and unmitigated power of yoga pants. Power is equal too and sometimes greater than hypnoboobs.
Yo Rob man! It's your turn at the weights!!
Sorry I was distracted by that girl on the treadmill with the hypnobooty!!
The mysterious magic women are able to cast on men by the almighty power of the uterus. It is neither quantifiable nor tangible but somehow usually irresistible by most heterosexual men and causes befuddlement and likely temporarily conversative enfeeblement and lack of comprehension before the aforementioned spell has been cast. Take note - true mistresses of vagoodoo can cast this bedevilment long before the targetted male realizes that BOOM he is in a long term relationship with no chance of parole.
Man, what happened to Bob. His girlfriend Tina cast that Vagoodoo on him, he hasn't been the same ever since.