Comic #1656: 2009-11-15
Description
Here's a transcription of the text from the comic you provided:
Panel 1: "Hiyooooooo Silveerrr!"
Panel 2: "Wooohhh! All aboard!"
Panel 3: "3, 2, 1, Blastoff! Fwoooosh! Fwoooosh!"
Bottom caption: "Rule of Thumb: If it was cool to do when you were five, it's not cool to do during orgasm."