Joelynish. Derivation of "Bum"
"You broke my pen, you bumii!"
by Tibro! May 30, 2003
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When excessive playing of the Wii causes a player to injure his dominant arm and forces him to create a Back Up Mii with his other arm. He will use this Back Up Me so he can continue to play but not ruin his primary Mii's rating. He can still enjoy Wii competition while he rests and rehabilitates his dominant arm.
John: There is one thing I haven't told you... I am not left handed.

Sue: What?

John: I think I got a Wii-bow playing tennis Wii yesterday so I need to use my BUMii to kick your butt.
by donnthuan23 January 16, 2011
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Joelynish. Derivation of "Bum".
"Ah you broke my pen, you bumii!"
by Tibro! May 30, 2003
Get the bumii mug.