Maude Lebowski: ...The word itself makes some men uncomfortable. Vagina.(Anyone wise or blessed enough to skip the news sufficiently that they don't get what this refers too, should click the first link. Life imitates art. Anyone foolish or benighted enough that they haven't seen The Big Lebowski should go watch it at once. If you're short on time, just skip the news enough to make up for it.)
The Dude: Oh yeah?
Maude Lebowski: Yes, they don't like hearing it and find it difficult to say, whereas without batting an eye a man will refer to his 'dick', or his 'rod', or his 'johnson'.
The Dude: Johnson?
-- The Big Lebowski
Update: Tom Tomorrow's cartoon on this incident.