Do not throw them away. If you like the high from eating pot (some don't) then make brownies from them. I make the stoniest brownies from all my male plants. If you have some trim, then throw that in there as well. You just have to boil the shit out of them for 4 hours or more. But only do this if you live in a house where it's feasible. 4 hours of boiling pot stinks.
Or throw them away.