So, she made them all promise to send her a postcard with a few words on how marital sex felt.

The first girl sent a card from Hawaii two days after the wedding. The card said nothing but: "Nescafe"!

Mum was puzzled at first, but then went to her kitchen and got out the Nescafe jar. It said.. Good till the last drop.

Mum blushed, but was pleased for her daughter.

The second girl sent the card from Vermont a week after the wedding, and the card read: "Rothmans"

Mum now knew to go straight to her husband's cigarettes, and she read from the pack: "Extra Long. King Size"

She was again slightly embarrassed but still happy for her daughter.

The third girl left for her honeymoon in Cape Town. Mum waited for a week, nothing. Another week went by and still nothing.

Then after a whole month, a card finally arrived.

Written on it with shaky handwriting were the words "South African Airways"

Mum took out some of her latest magazines, flipped through the pages fearing the worst, and finally found the ad for SAA.

The ad said: "Ten times a day, seven days a week, both ways."

The mother fainted...