The reason why obesity is so widespread in modern post-industrial societies is because our primitive ancestors knew that the only way to be fit enough to survive - and make sure their genetic material made it to subsequent generations - was to eat and/or fuck everything in sight.
I can only speculate at the evolutionary dead ends caused by confusion over the whole fuck/eat question... sounds like the makings of a great game show though- "Eat It Or Fuck It!"
Of course in certain situations the polite thing is to do both, but I don't think that's what you were talking about.
Will you tell me more about the phucking pleeze?

You certainly asked the right person- Ping moderates a forum where you can find out all you ever wanted to know about fucking.