I don't know what exactly this dude's deal is, but at the very least he should've asked that doorbell to dinner first! The man reportedly went on to commit several inappropriate (and possibly clothing optional) acts (too raunchy for this site) before leaving the scene.
Just... why though? Did the doorbell taste good or was it a texture thing for him? This is easily the weirdest video I've seen so far in 2019. The good news? The homeowners were out of town when the prowler stopped by to give the doorbell some love for hours on end.
At least he didn't try knocking in his own overly affectionate way......