When you take your condom off after use and consume the contents, like it's a frube.
Apparently Will banged some girl last night, then after he was done, he took his condom off, looked the girl in the eye seductively, and started frubing!
"Man, look at all those mamils. Who needs lycra? Let's go Friding instead."
"I was going to drive the 3km to work today, but the weather was nice so I went Friding instead."