Funny thing happened on my last transpac.

A couple hours before arrival I decided to freshen up. Wash up, shave, brush teeth.

Ah, new mini-tube of tooth paste! sealed. Reversed the cap, punctured the foil seal and watched 3/4 of the tube squirt all over the sink as the air bubble at the bottom of the tube tried to equalize the pressure.....

I did get some on the brush!