For those of you who are fans of math and beer

[Matthew Ryan]

This Klein Bottle Opens Beers

"The problem of beer:  That it is within a 'bottle', i.e. a
boundaryless compact 2-manifold homeomorphic to the sphere.  Since
beer bottles are not (usually) pathological or "wild" spheres, but
smooth manifolds, they separate 3-space into two non-communicating
regions: inside, containing beer, and outside, containing you.  This
state must not remain. "

http://www.bathsheba.com/math/klein/


Could be useful for opening bottles of Red Cap ale...


-Matt