Kegging issue

[Pogierob]

Why is it that beer glasses shrink on the weekend?
I pour myself a beer and sit down in the couch and Boom! The weekday pint has somehow managed to turn itself into a pony...

 

[dammag]

Evaporation rates rise on the weekend too.

Pour yourself a beer and by the time you sit down to drink it most of it has evaporated!

 

[Pogierob]

I'm sure there is facts that can be correlated in reference to productivity levels in Saturday's and house work too, I just haven't had a chance to do the sums.

 

[pcmfisher]

I've never understood how it evaporates out of a sealed keg either.