Well, first, you'll need a program, such as MS Paint, or Photoshop. If you don't have anything like that, pick one of the images, One, Two, Three, Four, or Five, send me a PM with the speech in the order of bubbles, and I can do your entry for you.
In case you're not familiar with Penny Arcade, the two main characters are Gabe and Tycho. Gabe is the dude with the black hair, yellow shirt with the black shadow of pac-man. Tycho is the other dude. As for the other characters, just label them as "Girl," and "Thing." The last stip features characters from the X-men, Wolverine, Storm, and Iceman.
One
Girl:
Tycho:
Girl:
Girl:
Tycho:
Gabe:
Two
Thing:
Gabe:
Thing:
Gabe:
Thing:
Gabe:
Thing:
Three
Tycho:
Gabe:
Tycho
Tycho:
Gabe:
Tycho:
Four
Gabe:
Guy:
Gabe:
Guy:
Gabe:
Guy:
Gabe:
Five
ZWAP!
Wolverine:
Storm:
Wolverine:
Iceman:
Storm:
KRAK-BOOM
Storm:
Wolverine: