Why the fuck would you have sex on your parents bed? sick

Some beds are pretty obviously not built for vigorous activity. But you clearly didn't consider that or didn't care, so now you deal with the consequences.

Tell them you chased Goldilocks out of the house after she broke the bed.

Mend the bed or buy an identical new one. Try not to be quite so stupid in future.

Without more information, I have to say that's pretty disrespectful and you deserve it.

Duh, you repair the bed.

As I recall: you were just showing your friend around the house and jumped on your parents bed as a joke..and it went crashing to the floor!

You both owe them a new bed frame. And you should stay there until its replaced.

You may think your boyfriend fucked you hard, but karma fucked you both harder. You'd better apologize, and buy them a new bed.

Explain to them that you lowered the bed for them because they are old and decrepit and you want to reduce the severity of their inevitable falls.