What is the problem with male and female marijuana plants?

Of course you can smoke them if you really want to.

Anything that burn can be smoked. Even diapers (Except wet ones).

The best way to harvest a male pot plant is right after it has sprouted.

Put it in an air tight container with water for approx 6 months.

Dry the remaining slurry in bright sunlight.

Put remains in fire and sniff the smoke.

Not guaranteed results but it will keep you busy for approx 6 months plus drying time.