Like they're on a timer?
If you don't use them, they explode on their own?
( Bats, Thu 4 Jun 2009, 21:07, archived)

"party poppers that pop in the night" is a quote from
Madness's Welcome To The House of Fun, and is a euphemism for a condom.
( CowJam, Thu 4 Jun 2009, 21:18, archived)