somking laser pointer?

i found a trick on youtube with a laser pointer and breathing smoke i whanted to know how to do it

Comments

[iceng]

2 guys lighting exhaled cigaret smoke with a laser, what trick !

[robertjames]

i thout that they didd something else

[rickharris]

Smoking ANYTHING bad news.

[Kiteman]

It would help if you gave us a link to the trick...

[robertjames]

its ''youtube.com/watch?v=bLJjwp8OnxE''