[flashback:]
Ted: [on the phone] Okay, okay. I'll delete the text.
Marshall: Thank you.
Ted: I just have to figure out how to get into Lily's room.
Marshall: Easy. The lock on her door is busted, so...
Ted: The drain pipe.
Marshall: What?
Ted: There's a drain pipe that runs up near her window. And no big deal, I can totally climb it. I'll call you when it's done.
Marshall: Her door is unlock... [call disconnects]