No. 3 likes the radio ad that goes something like this.
A : Hey, have you sold your house?
B : Yes!
A : Your car? Tv? Radio? Fridge? Computer?
B : All sold!
A : Errr... your mother-in-law?
B : Boo-hoo, not yet!
No. 3 : (Giggling) How can sell mother-in-law? Mummy, what's mother-in-law?
I : (Busy negotiating heavy traffic) Husband's wife or wife's wife.
No. 2 : No, it's not!
I : Oops! Husband's mother or wife's mother.
BTW, I can't remember what the radio ad was selling. The "means" has overshadowed the "end".