What does ADPA mean?

ADPA meaning in Urban Dictionary

Auditory Showcases of Physical Attraction. Like PDAs, but nowadays aided by the sound making it clear to everyone in building that somebody is getting some activity. After way too many incidents becomes like an auditory type of PDA (Pathetic Displays of Affection), and sometimes holds an outcome comparable to PD-AIDS, except that no-one really wants to also live-in equivalent construction after experiencing their ADPA.