(why do people keep doing that egg spam. ANNOYING)
During an exam call everyone you know. Guaranteed to work.
OR
Get a job at a circus. Come up with your own act and part way through it say "here is something else you may want to know. IVE GOT A BOMB AND IM NOT AFRAID TO USE IT" Pull out your alarm clock which you have previously set to go off in one minute. Also guaranteed to work. Works even better if you somehow do this at the royal adelaide show.
Go to a public library, stand on a table, rip your shirt off, do weird dance moves, swinging the shirt around, and making random weird sounds like: Whoop! and Zephiacrapia!