(Strip Number 865, Original Publication Date, 10 June 1985)
Panel 1: Elly asks John to run over to Anne's to get the One And Only Potty that Richard will use.
Panel 2: As he leaves for next door, she asks him to hurry.
Panel 3: She asks what's taking so long.
Panel 4: An angered John yells that Annie locked her [boxcar!!] doors!!
Summary: Ah, but not on purpose. Annie didn't mean to do this but this gets lost on John because he's a thin-skinned jerk. Also, the Lynnsight is all about how this is all a thought experiment on Lynn's part.