Mosr

A spelling mistake for "Most". You're either bad at typing, went too fast, or write too aggressively.

Random Internet Dude: "I have stolen MOSR of the coins fro you lolz!!!!!"
Grammerly: "This sentence is grammatically incorrect"

MoSR

Refers to the realm of mind a person visits when thinking back to their recent or distant past. Can be associated to a "head space" or being "lost in thought" at times. More frequently occurs when actions result in feeling guilt remorse loneliness regret.

*looking around the room at a party you notice a friend staring down and being unsocial*
Person 1: "Hey are you okay? You seem distracted."
Person 2: "Yeah sorry, I was just having a MoSR. I don't think I really fit in with this crowd."