Trendle, verb - To throw or roll large inanimate objects, namely rocks or boulders, over the edge of a steep cliff only to await the inevitable explosive sight and sound of their destruction.
A great pastime while hiking in the mountains is to trendle boulders down the cliff and watch them explode into pieces.
Unexpected, surprise orgasm achieved through the use of an old-time foot-powered treadle sewing machine.
First she started sweating, then she started moaning and then she started shaking. We thought it was a seizure, but it was just a treadlegasm. THERE SHE GOES AGAIN!!!