The act of French kissing ("frenching", "tonguing", "
pipe cleaning", "artery scraping") a rectum by penetration of the anus.
Thr croissant, as opposed to a
French baguette or any other carbohydrate, is used as an homage to the traditional lubricant: butter.
This is not to be confused with the "
Danish breakfast," eating breakfast foods out of an asscrack.