Quote from Patrick in The Incident
David: What is that noise?
Patrick: I don't know. Maybe the sheets are a bit stiff.
David: No, it's like a, a crinkling sound.
Patrick: Oh, you're probably just sitting on the mattress tag.
David: [gasps] Is this a mattress protector?
Patrick: No. No, no, that's a... a second sheet that you put on the mattress, um, that my mom gave me when I moved in, so I just...
David: You put down a plastic sheet?
Patrick: Well, I don't think it's a pla... I mean, it might have like a rubberized coating, but I don't know.
David: Oh my God!
Patrick: Purely coincidental.