You’re cruising down the road and a friend’s bar tape comes loose and starts unraveling.
Naturally, this wouldn’t happen to you – it would have to be a friend’s bar tape because you inspect yours quite often and you would notice and rectify any problem long before it devolved into actual trouble
Not to worry, you’re prepared:
What’s that? You can’t tell that there’s extra “just in case” electrical tape on there?
I know, that’s the point. Just put a couple of extra wraps at the end of your bar tape wrap. You’ll always have some extra with you.
There are more uses than just helping a friend with unruly bar tape. Need to secure a patch at a large blowout in a tire? Not to worry, you have some extra tape to hold the patch till you get the tube in place and blown up.