I just didn't have the patience for his shenanigans.
The phone rings
Me : McKee's, this is Kurt.
Him : Using a strange voice Yeah, is Stephan there?
Me : Can I tell him who's calling?
Him : Yeah, it's a friend of Stephan's.
Me : Great, so what's your name.
Him : I'm Stephan's friend. I mean, we could be friends too. We don't have to be if you don't want, but I'm just saying if you want to be friends with me, then that's fine, too.
Me : Goodbye. Click
Stephan : Who was that?
Me : Prank call.
Phone rings again
Stephan : This is Stephan. Listens for a moment, then covers the phone and turns to me Kurt, you IDIOT! That was Andrew! He has a speech impediment!