analsurfing 

When ones penis slides up and down the butthole, not being able to insert penis into butthole, thus surfing the butthole with the shaft.

Zaks had a hard time getting his penis into the butthole at night, making analsurfing easier.

analsurfing by IM JON May 21, 2010

anonsurfing 

The art of hijacking an anonymous person's conversation on formspring by disguising your own questions as the anonymous person's.

"I had a field day anonsurfing last night on formspring.me."

anonsurfing by NinjaWorksInc February 12, 2010