A new piece of medical equipment is being tested right now called the Pedisedate. Basically, it is a headset that is placed on a child before they are admitted to surgery. The device connects to a Game Boy or portable CD player (yup, not a Nintendo DS or iPod — apparently the Pedisedate also transports you to 1996) and a snorkel-like piece swings forward and is placed over the child’s nose. As the kid plays videogames or listens to music, nitrous oxide, an anesthetic gas, is emitted through the snorkel and puts the child to sleep.
It’s to make the kid comfortable.
Isn’t very convincing, but add “it comes attached to a Gameboy” and they’d want to out it on.
The headphone jack could have done nothing, but likely had something to do with time release. Kid gets to play for a minute then gets knocked out.
Like sure, you could just hold the kid down and chloroform the kid against their will, but in the scale of modern healthcare, this cost nothing. Even a small increase in compliance is worth it.