A lot of time on forms, there is a place for "Sex" which probably should be "Gender." Otherwise you could mark it yes, no, a grade, or when he/she is in the mood.
Of course, then there is the young boy who noticed the "F" on his mother's drivers license and laughed. When she asked what was so funny, the young boy said "Because you failed sex!"
Seek peace but keep your gun handy.
I'm not a complete idiot, some parts are missing!
“Illegitemus non carborundum est (“Don’t let the bastards grind you down”).”
― Julia Child