Don't use MOG, at it is used by the streaming music site Music On the Go. People will think you are streaming to the car stereo...
Never heard of it...though, if someone thinks that after seeing the lifted truck with a truck on the logo and the acronym spelled out below it, let them think "car stereos" because they wouldn't have gotten it anyway. lol. It's just for the people that "get it."
I have had a ton of vanity plates, knowing that the majority would never understand them - but the plates weren't so the majority could understand them, they were for a select few who shared a similar hobby.
4LBEAT8 was one of them (4 cyl will beat 8 cyl). Most people had no clue - but the other guys in hopped up 4 or 8 cyl cars who had the opportunity to stare down my rear bumper certainly understood it.