It is used to laugh at someone when you have acheived
something they cant. It can also be used to pronouce your pride of
something that others
may not thing you should take pride in.
Danny: I can't get my program to
work.
Andy: Heh! Mine works!
Danny: Screw you!
Andy: Shove a
cat up your arse
dude.
Dave: Im going to photocopy my passport and change my age.
Andy: You can't do that thats fraud.
Dave: Heh, dont care!