Half a croissant, on a plate, with a sign in front of it saying '50c'
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The Optimistic Hands-Free Sipper Cup

neither half empty nor half full but always brimming
 
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Across the rim of this cup is stretched a slightly concave, very elastic membrane. As the cup is filled, the membrane expands downwards, and the liquid’s surface always stays just under the edge. The air under the membrane exits through a hole in the handle (whistle or whoopee flap optional).

Halfbaking is made more efficient since one can easily sip coffee, tea or Drambuie without taking the hands from the keyboard and mouse. Taking this mug on social calls and closing the exit hole with the thumb insures that when one asks for only half a cup, there’s only room for half a cup.

FarmerJohn, Jun 09 2004

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       <ring ring> Mr Trump? Yes sir. You've gotta see this guy. Yes sir, he's posted another one today.....Yes it's brilliant sir....I suggest you send the helicopter sir. ...Well, NASA want him...yes sir.....yes sir....no sir I won't let you down sir... I'll get him for you sir...<click>   

       <loads tranquiliser gun into vehicle - checks location of nearest patisserie - checks availability of handcuff suppliers in the Mid West.>
ConsulFlaminicus, Jun 09 2004
  

       NASA Guy #1 "But they WANTED to be astronauts!" NASA Guy #2 "I know..."
simonj, Jun 09 2004
  

       Do all drinks have a similar density? I would guess they're all around that of water, except those with mostly alcohol. What's the thickest (heaviest) common drink? Egg nog?
phoenix, Jun 09 2004
  

       I think that the hot drink, such as coffee, might reduce the elasticity of the membrane, and stop the drink from rising.
fridge duck, Jan 12 2005
  
      
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