Er...why do the lids of things in tubes have a recessed pointy bit built into them?

( St. Defenestration The REAL one, Mon 19 Jul 2010, 23:49, 6 replies)

To pierce the foil seal of the tube

( in vino veritas, Mon 19 Jul 2010, 23:59, closed)

Oh, that kind of tube!
I have spent actual time over the past few days wondering why a cardboard tube that you might store a rolled up poster in would require a lid with any kind of pointy bit.

As my wrongness seems so elegantly and appropriately linked to the qotw I will report it with pride rather than the shame I feel.
( James Joyce is sucking my blister, Thu 22 Jul 2010, 3:25, closed)

For causing fatal cranial damage to insects.

( Bats, Tue 20 Jul 2010, 0:16, closed)

To discourage you from shoving them up your arse.
(minimalist ..., Tue 20 Jul 2010, 0:19, closed)

For very small acts of self harm.
(Falstaff's Spiritual Successor, Tue 20 Jul 2010, 1:09, closed)

It's complicated
But it involves two paperclips, an onion, a wasp in a jar, cotton buds, a car battery and some holy water.
(mr-lizard Hell's teeth man!, Tue 20 Jul 2010, 22:36, closed)