It's just my nerves getting to me again, yeah, that's. One of their earlier songs before they got their Saturday Night Live boost, "Ardy Party" touches on this. Some crapped themselves to death.
"I'm not gonna chicken out, I'm not gonna chicken out." repeats Mindy. Mindy was a girl who had yet to discover the joys of masturbation. Tamaryu and Shizuki void themselves in terror when Ran's attempt at a laugh turns into something like a Slasher Smile.