Break the radio and say that while everyone was sleeping there was nuclear
battle and everyone is now dead.

Hide your buddies space pants, just before a crucial space walk.

Uncouple the Japanese section, and as they float away helplessly yell
“That’s for Pearl Harbour!!…”

Use the Canada arm to start punching the Russian space shuttle and then exclaim that “they were asking for it with all their freakin’ late-night cooking smells”

Flush a crew member out the air lock and tell everyone he was an alien
planning to kill everyone and that you saved them from being cocooned!

Put a few drops of liquid ass in the air tanks of your fellow astronauts just before you step out.

When docking the shuttle, start beating the Viking war drum you hid by the
controls and yell “RAMMING SPEED”

Egg the Moon.

Tell Huston that Earth in your sites and you have missile lock.

Count down out loud as your about to take off, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1… …BOOM!