Police say two California teenagers used a prescription sleeping medication to spike the milkshakes of too-strict parents so they could log onto the Internet. The parents called police and the 15-year-old Rocklin girl and a 16-year-old friend were taken to Juvenile Hall. Rocklin is 20 miles northeast of Sacramento . The Sacramento Bee reports the girls offered to pick up milkshakes at a fast-food restaurant for the parents of one of the girls on Friday night. The drug was mixed into the shakes and the couple fell asleep. The suspicious parents picked up a drug test kit the following day.