A boy goes to the drug store with his dad and sees the condom display.
Boy:
โDad, why do they do packs of one condom?โ
Dad:
โThose are for the high-schoolers for Friday nights.โ
Boy:
โSo, why do they make packs of three?โ
Dad:
โFor the college guys for Friday, Saturday and Sunday nights.โ
Boy:
โThen why do they make packs of 12?โ
Dad:
โThose are for married couples โ you know, January, February, March.โ