The Monk on Entrana will knock you out if you've somehow smuggled combat equipment onto the island. You can create these items on the island either by crafting them or fletching them. Logging out and back in, or teleporting back from Vinesweeper, with one of these items in your inventory, will spawn the monk. You will be unable to move, and he will say "Hey, , get that stuff off our island!". You'll be knocked out and sent back to the boat on Port Sarim. After you disappear, he will say "Honestly, people these days.".