1. A Ska band from South Florida, also referred to as "MF"
2. A person who is fat only in the mornings
3. A big joint meant to be smoked in the morning
4. An erection experienced after waking up; morning wood
1. Guy 1: Hey man, are you going to the MF show tonight?
Guy 2: Hell yeah, Morning Fatty is the shit!
2. I thought she was hot, but when I woke up she turned out to be a morning fatty
3. There's nothing like a nice big morning fatty to start my day
4. When I got up I had to hide my morning fatty