In mathematics, the Klein bottle ( /ˈklaɪn/) is a non-orientable surface, informally, a surface (a two-dimensional manifold) in which notions of left and right cannot be consistently defined. Other related non-orientable objects include the Möbius strip and the real projective plane. Whereas a Möbius strip is a surface with boundary, a Klein bottle has no boundary (for comparison, a sphere is an orientable surface with no boundary).
I would not recommend putting anything but distilled water or clear alcohol in it nor carrying it around at all.
1) There is no airflow into the "base" from the "neck", so it will be nigh impossible to dry the "inside".
2) If it does get dry, then there will be left over residue on the inside. Due to the shape of the "neck" it will be hard to nightmare mode to clean it or to get the spots out.
3) It is super fragile and I would not recommend moving it, unless it is from cabinet to counter to pour out vodka.
Sorry to dash your dreams, but I thought I would warn you first. :P
Link
Star Wonder
Wow I want one... o.o my mate just offered to get me one lol. I would love to play with one of those. It's so interesting. And you can put stuff in it XD I want to put my juice in it! Bring it around and show off a weird thing to all my peeps