Child Abduction is Not Funny - S6-E11
Corrected entry: Tweek's parents tell him that they have installed locks on his window and door so that he is safe from abductors. But if Tweek's door and window are locked at night by his parents (as we see during the first night when they are teaching him not to open the door to anyone but them), then how did Frederick Johnson get into Tweek's room?
Correction: He simply broke in. Locks aren't perfect.
Bishop73