Turbojinx

The polar opposite of a jinx- for example, when one person makes a trumpet sound with their mouth and another person farts at the exact same time. Other examples include sneezing and sharting at the exact same time, humming and stomach rumbling at the exact same time. (Not associated with misfortune or one-upmanship, the Turbojinx has transcended these aspects of it's original, the regular jinx.)