Do you know that it is very hard to control laughing? The other day I was at this Chinaman supermarket for my grocery shopping and the old man DJ announced the launch of Hairly Potter and the deadly hollows. No one seems to bother about the announcement but I was so tickled.
However, I was alone in the grocery shopping so I couldn't smile or laugh for fear of people thinking I am nuts. So, I controlled and controlled till I get an ache in my cheeks.
When you do not want to laugh and yet something makes you laugh, it is soooo hard to control it. Sometimes, I had to cover the laughter with a cough or clearing my throats. And I hate it when I tell people, don't make me laugh and yet the joker purposely do it.