Lennon Parham and Jessica St. Clair

Butt-dialing affects millions of people every day. But when that call goes to your estranged husband whom you haven't seen since he Fed-Ex-ed you divorce papers? That's a whole different tune.

On Wednesday's episode of Best Friends Forever (8:30/7:30c on NBC), the recently dumped Jessica (Jessica St. Clair) finally appears to be getting back to her old cheerful self after weeks of nonstop crying and seven-hour baths. But just as Jessica and Lennon (Lennon Parham) start reliving their glory days in New Brunswick, N.J., circa 1998, their impromptu Weather Girls karaoke session comes to a very sudden halt when Jessica realizes her phone's big mistake.

Watch videos from Best Friends Forever

Watch this exclusive sneak peek to see Jessica's slightly off-tune fall from grace:

How will Peter handle the missed call from Jess? Watch Best Friends Forever Wednesdays at 8:30/7:30c on NBC.