stranger rodeo 

when someone runs up to another persons back without them knowing and jumps on and then yells "STRANGER RODEO".
like an unexpected piggy back

scotty ran up to alec and yelled stranger rodeo when he hopped on.

stranger rodeo by belly bamf. December 8, 2007

Stranger Rodeo 

An exclusive, underground game that anyone can be playing, but if everyone knew about it, the fun would be ruined.

Stranger rodeo is just like the regular rodeo, except instead of bulls in a dirt arena, it is with complete strangers in a public place. The object of the game is to jump on your stranger's back and hold on for the longest time while they try to shake you off.

Matt: Hey bro check out that cute girl over yonder.
Mike: You should talk to her. A little stranger rodeo would be a winning icebreaker.
Matt: Hey, great idea! I bet I'll even break your record!
Mike: It's on.

Stranger Rodeo by Mykro November 2, 2009

Big Stranger Rodeo 

An instance in which a small person, encouraged by a group of friends, jumps on the back of a comparatively large stranger, or person they do not know. The intent is to stay on the stranger for 8 seconds while the large, strange person ponders why someone is trying to get a piggyback ride he did not consent to. Abbreviated "BSR."

Friend: Look at that guy over there!
Smallguy: He's gotta be at least 6'1"
Friend: I'm feeling some serious Big Stranger Rodeo

BigStranger: Whaddafuh?

Big Stranger Rodeo by el relámpago negro May 3, 2009

Big Euro stranger rodeo 

One of neg's urban sports similar to Big stranger rodeo except you are only allowed to ride big European guys like a bull.

here's how you play big euro stranger rodeo

Big Euro stranger rodeo by jobflobadobyob June 9, 2011