For the word "bum" I also tend to think of the "part of the anatomy" meaning rather than "hobo".

Speaking of lines of clothing with peculiar writing on them, how about the trendy high street label French Connection? The complete name is "French Connection UK", and they print, stencil or embroider their initials visibly on many of their articles of clothing. Many people walk around with "fcuk" on their T-shirts, and sometimes the makers of the clothes have played with the word to make double-meaning slogans. One I have seen just recently is "Too busy to fcuk", but they have many different ones.

How is that for an attention-grabbing marketing strategy?