Just as long as the jeans are perfectly fitting. In my book there's nothing more gross than a chap (they are usually in their 50s or 60s) squeezing himself unsuccessfully into a pair of jeans which might have fit him 20 or 30 years previously - all that overflowing flesh...

Any men appearing like that in F or CW deserve to have their BPs confiscated and be sent down the back of the bus.