You're sitting down on the floor in the designated Can Town room (chosen by the mayor as Dave held him up like in the opening scene of The Lion King), when you feel something sharp poke your side.

You yelp and hold your side as cackling reaches your ears. "And I thought I was blind!" Terezi hollers with laughter, holding her walking stick like a hot poker. "Seriously, though, what are you doing? I can't see it."