the process of placing an object in the care of someone,
consequently having it disappear
inexplicably to never be found again, often within a timeframe of minutes to hours after placing it in the care of the previously mentioned person.
(friend): Where is the car park ticket?
(Poor soul): hmm I'm sure I had it somewhere
over here...
(friend): Oh no! Did you jakkify it?
(Poor soul): wait, wait, I'm sure it's somewhere
under the seat or
something.
(friend): It's been jakkified!