Now, don't let ur imagination fly!
I'm talking about the extra mattresses provided in the newly weds' room in every Balaji saural! Be it Kasamh Se or KAA (i'm sure there r others as well).
It is as though they in laws anticipate the need for these beds.
They certainly come in handy when the couple in question is forced into marriage and have to put up with each other.
Another thing...the male half is always an MCP who occupies the comfy bed while the wife ends up on the floor!
Sad.