it was used in the episode Hungry Hungry Homer originally aired on March 04 2001.
Bart + Lisa: Meh.
Homer: But the TV gave me the impression that --
Bart: We said, "Meh!"
Lisa: M-e-h, meh.
2. usually used worldwide by teenagers to piss off their parents. usually causing the parents to scream with fustration and the kid to feel great satisfaction that 1 word can cause to much grief to a parent
2.parent: You need to clean your room
parent: you'll be late for school!
parent: for fucks sake wil you get up off your arse all you do is sit there all day!!
2:a general noise of dismissal, mild dissent
sounds like 'bed' but with an 'm' and 'h'
josh: fine then.
2: archaeologist guy: that grass is looking a bit crappy.
leslie: meh, its alright.
Person B: "Meh..."
Person A: "Damnit, either you know and won't tell me, or you don't give two shits."
Person B: "Meh.."
Tell me you couldn't find atleast 50 answers in there.
"Wanna go to a concert?"
"(While watching TV) Meh"