doing an M.D 

over-excersion of energy in order to show off ones physical prowess to 'friends'

Alex: look at that guy sprinting up that scree
Bonnie Tyler: oh he is so doing an M.D

The Bale: what a cock!

doing an M.D by Screeee August 25, 2008

Alexander M "doing an alexander M" 

alexander m or "doing an alexander" is the definition of snorthing lines of cocaine off male genitalia while getting fingered from behind. you often come a cross this situation when you see a used junkie almost always indian trying to get into clubs or getting free drugs from a dealer by offering to suck his genitalia and after snorthing coke of it

Alexander M "doing an alexander M" maiiin please let me in imma Alexander m you handsome"
"yo im tryna get a g, can i pay you with an Alexander m?"

Alexander M "doing an alexander M" by shadowdagger3000 September 6, 2021