Acronym popularized by use in chatroom and messageboards. Linguistically ROFLMDAO is the equivelent of sneezing so hard you shit in your pants. Such acronyms are used not by the lazy but by the chronically retarded. It is unlikely that they are in all actuality: a.) rolling on the floor laughing; and b.) laughing their damn ass off.
by John Steinback March 28, 2003