Feedback from a comment, usually used as a replacement for okay. Used to show indifferance, however in most contexts a "leaning" towards the positive is introduced.
"I'll pop round for a coffee later"

"That'll be marvie."
by mandielanious May 11, 2004
Other than this word being a positive term, it is also the transformation of Barbie into a masculine whore. It can also mean that Barbie took fuck loads of drugs and magically grew a tiny penis. Usually confused for a transexual
:OMG! that tranny lost my flash disk!

:That aint a tranny, thats a Marvie
by big-bad February 09, 2011
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