“A chemist 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 chemist version is:
 
“A chemist walks into a bar and asks, ‘Do you have any Sodium Hypobromite?’ The bartender shakes his head and says, ‘NaBrO.’”
 
“Do you have any Sodium HypoBromite? NaBrO” was cited on Twitter on August 8, 2011. A “walks into a bar” joke version—“guy walks into a bar ad asks: ‘have you heard the joke about sodium bromide?’ bartender: ‘Nah Bro’. lol get it? NaBrO?”—was cited on Twitter on October 23, 2012. The “NaBrO” joke has been printed on many images.
 
 
Wikipedia: Sodium bromate
Sodium bromate, the inorganic compound with the chemical formula of NaBrO3, is the sodium salt of bromic acid. It is a strong oxidant.
 
Uses
Sodium bromate is mainly used in continuous or batch dyeing processes involving sulfur or vat dyes and as a hair-permagent, chemical agent, or gold solvent in gold mines when used with sodium bromide.
 
Twitter
Ricky Spanish
‏@jackmccalley
hey do you have any sodium hypobromite? #NaBrO
1:08 AM - 8 Aug 2011
 
Twitter
Pawel Janiak
‏@cynicalgrinch
Do you have any Sodium HypoBromite? NaBrO
12:41 PM - 8 Aug 2011
   
Twitter
jo
‏@jojogeevee
guy walks into a bar ad asks: “have you heard the joke about sodium bromide?” bartender: “Nah Bro”. lol get it? NaBrO? #chemjokes
8:36 PM - 23 Oct 2012
 
Twitter
Gulli Lord
‏@GulliLord
@JMouseyF a man walked into a bar and asked Sodium, Bromine and oxygen for a drink. He replied NaBrO
11:31 AM - 2 Mar 2014
 
Twitter
Tobi Wan Kenobi
‏@ramentobi
A guy walks into a bar. The bartender asks, “Do you want some sodium bromide?” The man shakes his head and goes, “NaBrO.” @meghanporyay
6:28 PM - 7 Apr 2015
 
Twitter
ShaynaJulie
‏@valentingusp01
A chemist walks into a bar… Chemist: Do you have any Sodium Hypobromite?
Bartender: NaBrO #rofl
4:27 PM - 24 Apr 2016
 
reddit
A chemist walks into a bar…
submitted April 24, 2016 by Spongebobsdeaduncle
Chemist: Do you have any Sodium Hypobromite?
Bartender: NaBrO