A CHEEKY Pearson airport couple swear they were only testing out the bunk in a new Terminal 1 slammer. Airport officers said a construction worker and female security guard had slipped into the isolated Canada Customs holding cell to have noontime sex when they accidentally locked themselves in.

"They didn't realize the cell door locked from inside and they couldn't get out," one worker, who didn't want his name used, said yesterday.

Workers said the pair had to wait for about four hours before their colleagues came along with keys to open the cell doors. Their bosses had sent out search crews suspecting the workers were lost or in need of help