omigosh
The equivalent of [omigod] or [oh my god] or [oh my gosh] usually said by ditzy girls that just slur the three words. Hence, omigosh, instead of oh my gosh.
> Becca: Omigosh, Jen! Brad just waved at me!
> Jen: No way! Omigosh, did you wave back?
> Becca: Omigosh, yes!