the act of constantly talking about being a virgin, and how its the best thing ever.
guy: my nephew keeps pebbying at me
guy 2: hah, imagine not having sex
A “Pebby” refers to that of a disposable vaping device, specifically the Flum Pebble, hence the name.
“Aye bro pass the Pebby real quick”
“Naw bro it’s dead since this morning”