All of this reminds of a notice on somebodys, boundry wall, the house was on the main road and there was a sign in urdu saying
" IS DEEWAR PAR LIKHNA MANA HAI"
and somebody wrote underneath it
" HUM NAY KAB KUCH LIKHA HAI !!!"
so same thing is happening with Keenu and Shwetha both are buk buking and at the same time saying " HUM NAY KUB BUK BUK KIYA HAI"