"Lickable ass cheeks" refers to the act of engaging in oral stimulation of someone's buttocks, typically as part of a sexual activity. In this context, it is assumed that the person's buttocks are considered visually and physically appealing enough to be licked or touched by another individual for pleasure purposes. This tag is often used to highlight the emphasis on the physical appearance and the act of oral stimulation involved in such an encounter. It is intended for adult audiences familiar with adult content