Commonly expressed as the acronym: RAC

1) The visible outline of a girl's ass created when she wearing

leggings with either a long shirt or short dress/skirt that showcases the bottoms of her cheeks where they meet the back of her thighs. Resulting in upside-down cleavage of the ass best appreciated when she's walking up stairs.

2) Summertime variation would include the same get up sans leggings and/or with short-shorts.

It’s an acronym standing for Can’t Remember A Fucking Thing. It’s usually used to describe embarrassment at being unable to remember someone (CRAFT moment); going onstage as the lead in the latest theatrical performance and your mind goes completely blank (CRAFT situation); the next morning after a night when you got pissed as a fart and woke up in bed cuddling a traffic cone and a string of fairy lights wound round your prick.