“Premeditated murder” means a murder that was planned in advance. It doesn’t mean a murder “before meditation,” but there are jokes.
   
“Just heard about the yoga instructor that killed his students before class. Talk about pre-meditated murder! ZAMMO!” was posted on Twitter by Daniel Herrera on March 29, 2010. “What do you call a killing before yoga practice? A pre-meditated murder” was posted on Reddit—Dadjokes on August 24, 2020.
   
       
TheLaw.com Dictionary
PREMEDITATED MURDER
THELAW.COM LAW DICTIONARY & BLACK’S LAW DICTIONARY 2ND ED.
Intentional murder that was planned in advance of the actual act of killing the victim.
 
Twitter 
Daniel Herrera
@DeputyDanster
Just heard about the yoga instructor that killed his students before class. Talk about pre-meditated murder! ZAMMO!
1:22 PM · Mar 29, 2010·Twitter Web Client
   
Twitter
A.J. Whyte
@HaHaWhytePeople
If you kill someone before yoga class, is it pre-meditated murder?
3:13 PM · Oct 26, 2011·Twitter for BlackBerry®
   
Twitter
Andy Derer
@AndyDerer
Pre-meditated murder is when you kill someone before you do yoga.
4:51 PM · Jun 22, 2013·LG Phone
   
Twitter
Connor Wilson
@ConnorTWilson
Not guilty of pre-meditated murder? What, so he did his yoga before killing her instead ?
6:27 AM · Sep 11, 2014·Twitter for Windows Phone
 
Reddit—Dadjokes
Posted by u/pittybrave August 24, 2020
What do you call a killing before yoga practice?
A pre-meditated murder