Where two people are in a deadlock over who will pay the bill at a restaurant. This does not occur by the persons disagreeing over who should pay, but rather by the reluctance of either person to be the first to reach for their wallet.
Joel and Shelley have just had lunch at a local vegetarian restaurant. When the bill comes Joel disappears to the bathroom. As he returns he is disappointed to see that Shelley has not already put her credit card or cash on the bill tray.
Joel and Shelley then sit awkwardly at the table in a Jew-Lock, neither wanting to be the first to offer to pay.