above: A Tuba Player's Brain from Tone Deaf Comics
(click the image to enlarge)
Tone Deaf Comics creates comics for anyone that was ever in band. Lots of jokes for all the instruments in the band and orchestra. They put them out pretty regularly. I will post Tuba related ones here (and others that I find exceptionally funny).
You can find them at: http://www.tonedeafcomics.com/