Tumber is something that is cool or liked.
Man did you see that backside 540 i nailed the other day. Man that was soooo tumber
by The Quadrant of Doom May 9, 2008
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I asked my 2-year-old what she was doing with the empty plates, teacups, saucers and napkins on a picnic blanket. She replied, "I 'm just tumbering that I'm having a real tea party."
by brett1323 December 26, 2017
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