Doped Tennis Balls?

7

The tunnel-like passageway between points 6 and 7 is nicknamed "shove alley." The alley was originally two cells that backed onto each other.
You are now in the "games" yard. Volleyball and tennis were played here on the weekends and at the end of each day. In the early days this was not a high security gaol, and sometimes the inmates would climb over the walls, run down to the pub, buy some grog, climb back inside and hide it to drink later. Did you know that tennis nets make good ladders?

An extra enticement for playing tennis was having friends on the outside who would throw in a doped tennis ball. (An ordinary tennis ball with a slit was stuffed with some drugs - mainly marijuana - in a plastic bag. The recipient would swallow these drugs, plastic and all, and retrieve it later in the privacy of his cell, as it passed through him! This ruse didn't always go as planned, however, and at least one prisoner was very ill because the plastic bag had not been well enough seal; an overdose resulted!