Several Months back :
Me : Jillu, plug yedu. Apram chocie, bikkie yellam saapida mudiyaadhu (Jillu, remove yr plug. Otherwise you wont be able to eat chocies or bikkies)
(If you are interested to know more about Jillu's plug, this would tell you more )
Jillu : Mudiyum Mudiyum (can can )
Me : plug yedu, Apram unnaku yendha school um kidaiyaadhu, chocie yum kidaiyaadhu (remove yr plug ! otherwise you wont get into any school and wont get any chocies as well!)
Jillu (in all earnest) : Kidaiyum Kidaiyum * (get get)
After a split second of shock, we were all ROTFL on her usage :)
And thus was born the Tamizh word "Kidaiyum" in Jillu's house hold.
Current Status :
The word is still widely in use and in fact used for all scenarios and situations by Jillu :) An addition to the Tamil language dictionary !
* For Readers not very familiar with Tamizh : There is no word called "Kidaiyum" in Tamizh. She said "Mudiyum " when I said "Mudiyaadhu" which is a correct usage. But she spontaneously said "Kidaiyum" when I said "Kidaiyaadhu" which is not correct . She used "Kidaiyum" in the same way as "Mudiyum" rhythmically. The correct usage would have been "Undu".
Readers, please excuse my bad translation here. I hope I have conveyed the essence of what she said and did!