Bodum Pavina Double-Wall Thermo Glasses

[p_elliott]

Would that be sucking on a towel

[MarkEdwards]

I once had one of these double-walled steins, but had trouble actually getting the beer into the stein. Unfortunately, it had a catastrophic collision with 2-D space :

http://www.kleinbottle.com/drinking_...ein_bottle.htm

[Kalessin]

Acme Kleinbottle (www.kleinbottle.com) does truly supply the gift for the mathematical theorist, topologist, or geometer who has everything. As my dad is a math professor, for one birthday I bought him a "standard" baby Klein bottle from Acme.

However, I hadn't until today seen his "Wine Cup of Tantalus" and "Beer Stein of Tantalus" until I was poking around the site just now. Link: http://www.kleinbottle.com/Tantalus.html


Fill it less than halfway, and the drink is safe. Fill it over halfway or so, and it siphons out onto the floor. Good times!