Noted with Translation - Grandmotherly Advice

Not my grandmother's kind of advice, but apparently this is how the crass and pessimistic gradmothers roll.

My grandmother used to say, "Do you ever wonder why before sex, each person helps the other take off their clothes, and after sex each one gets themselves dressed? Well my child, this shows that in lafe no one wants to help you when you are fucked, and if they help you it's because they want to fuck you... Understand?"