Gate Keeper explains the dangers of Time Travel in today’s flashback!

↓ Transcript
1 - (Cat is standing on the time machine)
Cat: But isn't time travel dangerous?

2 - (GK and Cat are shown in silhouette)
Gate Keeper: No, it's perfectly safe!

3 - (GK looks angrily back at Cat)
Gate Keeper: Unless you screw up. Then the multi-verse blinks out of existence!
Cat: WHAT?!?!?