J: Ok, my character is going to search for any psychic people.
GM: Oh-kay... You sense D's character is psychic.
D: *Decides his character need's the toilet*
J: I follow him.
GM: ... Right. And does what?
J: I walk up behind him.
D: I pull out my gun and point it over my shoulder, saying "What do you want?"
J: How does he know I'm there?!
GM: ... Because he's psychic? o_O