How do you control your laugh when your in public place?

[LupBo]

I try to hold it and end up pissing my pants

 

[Fez]

Cut off one of y fingers for every time I laugh..

 

[Zatl]

I bite my lip.

 

[Breezy]

Think of the death of someone you care about.

 

[Emma]

The church giggles?
I usually just put my hand over my mouth, close my eyes, think of the worst memory I have.
But hey... sometimes you just need to laugh!