“A mole walks into a bar…” (bar joke)

“A guy walks into a bar…” is a typical form of what has been called the “bar joke.” A science joke is:
 
“A mole walks into a bar. The bartender says ‘Sorry, we don’t serve moles here due to a beer law.’ Then the mole says, ‘Idiot. Beer’s law applies to light!’”
 
The joke has been cited in print since at least 2008. A bar joke mentioning “Beer’s law” should be popular, but the joke—perhaps too technical—has been very rarely told.
 
       
Wikipedia: Beer-Lambert law
The Beer–Lambert law, also known as Beer’s law, the Lambert–Beer law, or the Beer–Lambert–Bouguer law relates the attenuation of light to the properties of the material through which the light is traveling. The law is commonly applied to chemical analysis measurements and used in understanding attenuation in physical optics, for photons, neutrons or rarefied gases. In mathematical physics, this law arises as a solution of the BGK equation.
 
Rosetta@home
I wish i was helicase…   
agge
Posted 30 Jan 2008 23:49:05 UTC
(...)
a mole walk into a bar. The bartender says “Sorry, we don’t serve moles here due to a beer law.” Then the mole sais “Idiot. Beer’s law applies to light!”
     
Boktai Online
SCIENCE!
Deleted User
Feb 4 2008, 10:14 PM
(...)
602214000000000000000000 moles walk into a bar. The bartender says “Sorry, we don’t serve moles here due to a beer law.” Then the 602214000000000000000000 moles say “Idiot. Beer’s law applies to light!”
   
YouTube
’A Virus Walks Into a Bar…’ and Other Science Jokes - Brian Malow
FORA.tv
Uploaded on Nov 20, 2009
COMMENTS
ladytanuki 1 year ago (edited)
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A spectrophotometer walks into a bar and asks for a beer.  When he receives his beer, he exclaims to the bartender, “I can’t drink this!  It doesn’t follow the beer’s law!”