A.B.D.L. - Adult Baby Diaper Lover
Ageplay - A type of sexual roleplay wherein one (or more) of the consenting adults that are involved acts in a manner that is associated with a different age than the individual truly is. This is typically associated with one (or more) of the individuals acting dramatically younger, though sometimes they may act older.
Age Regression - When an individual acts as though they are a younger age than they are. This term is not typically used in a sexual context, but there is some overlap with this and the ageplay community.
Ahegao - A term originating from japanese pornography describing an exaggerated facial expression associated with extreme arousal and/or orgasm. Said expression typically includes rolled back eyes, tongue sticking out, and flushed cheeks.
Anal Sex - Sexual acts involving penetration of an individual's anus.
Anon - A term used to describe an individual interested in anonymous sex.