To have your attention "stolen" away from an intense activity (like playing a game) by the incessant ringing or ring tone of your phone, which of course, you have to answer.
Origin from 'hijacked': as the past-progressive meaning stolen in a violent fashion.
Mike: Okay man.
30 mins later.. Can I have my phone back
Dustin *Still In arguement with girlfriend*
Mike: "Great, Ive been Phone Jacked."