This isn't stunting but an amusing story.
Back in 1998, in Columbus OH, a group of us (10 bikes, some with passengers) would crush beer cans and duct tape them onto our knees. Usually during the weekend past mid-night, we would hit the cloverleaves (highway on/off ramps). We would start lighting up the asphalt with sparks.
I also had a gf that had no fear. she rode sitting straight up while i was in full kneedrag.