There are established mathematical terms which may be construed as to carry sexial or drug/alcohol-related innuendo. Examples:

 1. handlebody
 2. pipe dream
 3. drunkard's walk
 4. perverse sheaf
 5. [Tits alternative](https://en.wikipedia.org/wiki/Tits_alternative)
 6. [hairy ball](https://en.wikipedia.org/wiki/Hairy_ball_theorem) theorem

Should MO start censoring these and similar established terms, too?
IMHO, word play in some of the cited in the question jokes is quite similar, e.g. "Moebius stripper".