Offensive words

While this probably isn't a bug, I thought I should bring it into the light. So I was naming my rune pages after anime. And I came to Yowamushi Pedal as a name. I was informed there is one or more offensive words. So to my surprise I type in pedal and I found out it's the offensive word. My question is exercise so offensive that even parts of a bicycle aren't even allowed to be spoken in LoL? I thought this was hilarious and had to have it shown. Sorry if this has been posted.