When one person talks about their accomplishment, another person in their discussion chimes in about how they have either already done that or how they have done something else. Common among friend groups, and acquaintances.
"John needs to stopfucking one upping everyone!"
"Stop one upping and let me tell my story."
Uppies and Downies is a game played in Workington, Cumbria, England. Basically, grown men chase a smallball through the town from one end to the other, upper town versus lower town. It sometimes gets quite violent.
"Ere marra, how did ya lose ya finger?"
"Uppies and downies pal, uppies and downies."
To hold someone up with a pistol or knife, after demanding they raise, or, "up" they hands. Can end in murder, robbery, extortion or hug. No in-between.