A minor character in My Little Pony: Friendship is Magic. Big Macintosh is the older brother of Applejack, who is usually seen helping out on the farm, Sweet Apple Acres. He's known for saying "eeyup" and "nnope."
Big Macintosh has been under at least two love spells. In the first case, he loved Twilight Sparkle's doll Smartie Pants, and in the second case he was given a love potion--ahem, love poison, and became fixated on Cheerilee until the curse was broken.
Big Macintosh manages to be best pony, even though he doesn't say much.
'Macintosh Sucks' (sometimes shortened to 'Mac sucks') is a statement said by many smart people to reference the sucking of Macintosh computers, It is used to make fun of the sub-human race of Mac-Fags who thinks that Macintosh computers are actually good.
Mac-Fag: Hey, I just got a new computer.
Human: Oh really? What type.
Mac-Fag: Mac.
Human: Macintosh sucks.