Biker Run: (noun) Sometimes also referred to as a rally.  Typically consists of a shit-load of bikers partying on weekend at a pre-chosen location.

"Biker Games" - Ranging from the inane to the insane, these are games played by bikers at rallies to pass the time and show off skills.  Skills can include:  riding really fucking slow, determining who has the loudest pipes, stomping around on 2X4's with others, tossing raw eggs a really long way without breaking them on your buddy's head, throwing empty beer kegs over trees, holding a gallon jug of water out in front of you for a long - REALLY long - time, and seeing who can burn their back tire the fastest into a smoldering pile of melted rubber goo (one of my all-time favorites) by twisting the throttle in a hard downward fashion with the motor (and those watching nearby) screaming loudly.

"The Weenie Bite" - Classic biker game defined by a biker riding really slow with a female passenger on board behind him.  A hot-dog, often smothered in mustard or mayonnaise, is suspended from a hanging structure.  The bike passes slowly under the suspended hot dog and the passenger must stretch upward and bite/swallow as much of that dog as possible.  Extra points are awarded by cheering onlookers for a particularly messy face mishap, taking "the whole thing," and gracious displays of bare racks, boobs, knockers, tits, melons - the term depends on what the pre-equipped party is graciously displaying...

"The Wet T-shirt contest" - often the most-attended of biker events at a particular rally, this is where a select few of the various members of the fairer biker sex (uuuhh, that means da broads...)  are willing to get up on a stage and display all or some of what their mamma gave them.  Sometimes you wish that certain ones had reconsidered before jumping up there, but you will be grateful none-the-less for this most popular of biker pastimes.

"Flashing" -  Often preceded mere moments before by the phase, "show me your tits" this is where biker chicks also give the rest of us what we are hoping to see by momentarily showing us their goods.  Rack-flashing tends to increase as the day turns into night and is directly proportional with the amount of alcohol consumed.