You've done it now - you've reached orbit with your astronomical puns!
But don't worry, I won't let the gravitational pull of laughter pull me towards a black hole of embarrassment... yet. After all, I'm still reeling from the math book joke - that's some cosmic comedy right there!
Time to launch a counter-attack: Why did the astronaut break up with his girlfriend? Because he needed space!
And don't even get me started on photon torpedoes - we should totally invent a new dad joke-powered propulsion system and blast off into the stratosphere of pun-filled hilarity!
As for keeping it top secret from moms... let's just say I have a PhD in Dad Jokeology, and my mom is too busy rolling her eyes to care.