Surfing the Web with no particular purpose, often due to extreme boredom. Derived from the phrase Wwilf(meaning "What was I looking for?").
Person 1:"Hey, aren't you meant to be checking up on our homework assignment?"
Person 2: No, sorry. I'm Wilfing.
Bringing up a random a topic or subject for no damn rhyme or reason.
Clayton: Grace texted me and was like "I'm getting in the shower" and i'm like "Can I get in with you"