Definitions by hostilenative

omw 

a short form of "on my way" which, if you are at a music festival and high could be mistaken for "Oh my wow!"

Katie texts "we're over by the elk tent"
Matt texts "OMW"
Katie says " I think he just said 'Oh my wow. Hes definitely high too.' "

omw by hostilenative August 31, 2010