OCD stands for On-Crack-Daily. Someone who uses crack on a daily basis, in other words, a crackhead/junkie

A genuine disorder causing destructive/ obsessive thoughts and compulsions. This often results in ritualistic or repetitive behaviours until something feels 'right'. This is an anxiety disorder and NOT the same as being picky or particular about things being neat and tidy, even though disorderly things can be a trigger for ocd tendencies.
Saying you are "so ocd" or "that really sets of my ocd" extremely annoying and you more likely have copd (obsessive compulsive personality disorder).
If you genuinely thing you have ocd and want help, talk to your GP and don't be an annoying twat.

means an obsessive compulsive dickhead

Obsessive Cleaning Disorder AKA Obsessive long-ling Disorder.

Obsessive Corona Distancing.