Where an individual who is wearing tight pants and full briefs gives the illusion of having the folds of a croissant on their backside.
Usuallylargerindividuals with spray on denim are culprits of this crime.
Walking along at yourlocal shopping centre you spot a lady waddling along.
You nudge your friend in the arm and say "look at the croissant ass on her!"
Your friend will then gasp in terror.