One of the articles in my (Dutch) secondary school newspaper had a long list of funny English quotes, e.g. "Time flies like an arrow; fruit flies like bananas.". There was one quote for which I couldn't figure out the joke:
Don't drink and park; accidents cause people.
Since it's famous enough to be printed on mugs, sweaters and bumper stickers it must be funny, but I don't get it. There might be some innuendo (drinking, causing sexual activities, causing pregnancy) but I don't get the connection with driving (which is implied both by the similarity with "Don't drink and drive", but that slogan doesn't have a second part, and by "park"ing the car).
Is that all there is (and it's just not my type of humour) or am I missing something?