Replaces the text 'roller derby' with 'my butt', as well as 'derby' with 'butt' in certain contexts.Replaces the phrase "roller derby" with "my butt" and various other occurrences of "derby" with "butt."
Source code is available at https://github.com/JoppeSchwartz/derby-to-butt
Forked from the cloud-to-butt plus, available here: https://github.com/hank/butt-to-butt