a guy who is under average height, normally under 5'2. But is the most frickin awesomest person who ever lived, all the girls love him because he is so cute. He is the coolest, funniest, hottest, and most loved of all people on the entire planet.
A male usually 5'6 or under. At one time in history it was considered okay to be 5'4 - 5'6. Nowadays its abnormal and unattractive to females. Doesn't matter if your good looking or nice, short guys usually have to struggle when finding a female who will actually give them a chance in a crowd of tall males. Soon to be extinct.
Girl #1: "How about that short guy?"
Girl #2: "Hes cute...but too short."
Girl #1: "What about that other guy?"
Girl #2: "Hes kinda ugly but very tall....i think im gonna have sex with him!"
(on OKCupid)
Profile: MD, senator, bodybuilder
College-dropout woman: EW! He's 5-6... just another short guy with a little dick!
and
(in the future)
Doctor: We've looked at a genetic sequence on the 4th Y chromosome, the newborn boy will only be 5-9 as an adult - a short guy
Mother: OH GOD KILL IT!!!
The short guy grunt refers to guys at the gym that make loud obnoxious sounds like grunting or screaming while doing incomplete reps with weights that are obviously too big for them and in some cases they will scream and grunt with light weights, this is done to make themselves feel bigger than they actually are. Typically shorter men are seen doing the short guy grunt while lifting, but it doesn’t matter how big you are, if you’re being loud and obnoxious for no reason at the gym then you’re still doing the short guy grunt