Zoobomb is a 5 year running weekly bike event that meets every Sunday around 8:30PM across from Rocco's Pizza (949 SW Oak) in Portland OR. Bring a bike, MAX fare ($2.00), bike lights, and any safety gear you want to wear.  
Its a good time and you WILL have fun!
MINI BIKES ENCOURAGED - ALL BIKES WELCOME
HELMETS ARE A GOOD IDEA
* RIDE AT YOUR OWN RISK *
LEAVE NO TRACE