To perform a Jack Yonce is to stand in the middle of a packed auditorium during ANY and ALL intermissions of a concert for the sole purpose of being seen. This usually happens with the arms folded and that person talking to another person Jack Yoncing, or looking around acting like they are looking for someone specific, when in all reality they are waiting for someone to notice them and wave first.
"You sure do get to see a lot of band directors you dont normally see during the year at All-State Band"
"Yeah, look over there, Tim and Clay are Jack Yoncing like a pro!"
to bitch about others in an endless manner; also to be an extremely intense hypocrite, could also mean lusting for secual intercourse from varities of Asian girls. If you are called a "Yong", you are considered a giant loner. Also means to literally make yourself a bitch to girls.
A cross between yoga and planking. A forum of partner yoga in a mirror pose of each other often performed in a prominent location or on a significant structure.