|I'm in Blue (r); Sis in Rose|
Our church had a curved altar rail with a padded arc below it for kneeling during communion. Halfway through our number, I leaned over the railing and told my poor, cringing mother in a stage whisper, "I have to go to the bathroom!"
When she nodded to indicate she'd received the message (along with everyone else in church) I climbed over the rail, bounced off the knee-pad, and headed at a run up the aisle to the ladies room. My poor sister was left to finish the song on her own, though I doubt anyone heard it for the laughter.