first was rolling up what burely counts as a curb, blew the tube right out instantly.
caught a thorn the second time. it got caught in the tire, didn't notice it til i went out to ride it the next day. i haven't replaced it yet but does that mean i need a new tire as well as a new tube?
and what can i do about this? both times were rides around the block in clean suburb streets. a total of maybe 10 minutes of riding.