borat creates this humerous moment. merely a cathphrase consisting of 3 words, "who is jack?" can be said in a various amount of situations, all equally as humerous.
1.*man with car jack* And this is the car jack
*borat/you*yes... and when will jack get here?
2.*man with bowling jack* you must roll the jack.
*borat/you* ah ok, so who is jack?
3.*man with jack* hello, meet jack.
*borat/you* lik the jack nicholson? "i hold up the bank"