Thunder From Down Under -- 103-Year Old Lady Got a Face Full of Junk

Age 'aint nothing but a number ... even when a 103-year old lady wants you to swing your crotch around while wearing a pair of skivies.

The guys at the "Thunder From Down Under" show in Las Vegas treated Hilda Eveleyn Kottman -- a minor internet celeb -- to a special dance Friday night in the V.I.P. lounge.

We're told the guys had to make a special trip to her section ... because Grandma Evelyn would take too long getting to the stage.