A girls butt that doesn't look good in most types of pants , however when the pants come off , or she wears tight yoga pants and similar pants her ass looks great. Like a sleeper agent Activates by a trigger for their mission, allowing them to transition from their "dormant" state to active. The sleeper booty is dormant until it she Activates it by making a choice to let those beautiful cheeks be seen in all their glory.
Damn baby your ass looks great in those! I didn't realize you had a been working with a sleeper booty.