surfs; surfed; surfing
1 [no object] : to ride on ocean waves using a special board (called a surfboard)
He learned to surf when he was living in California.
— see also WINDSURF
2 : to look for information or other interesting things on the Internet
[+ object]
surfing the Internet/Web
[no object]
surfing on the Internet/Web
— see also CHANNEL SURFING, SURFING