sheet surfing 

To have sex on top or under the sheets

Man you should see the chick I went sheet surfing with last night.

sheet surfing by ron ron juice February 18, 2011

skeet surfin 

the art of surfin' with a 12-gauge shotgun to shoot pigeons while riding waves...

"skeet surfin...skeet surfin...skeet surfin... if everybody had a 12-gauge and a surfboard too, you'd see em shooting and surfin, from here to malibu..."

skeet surfin by iransan December 26, 2008