There’s a Krypto the Super-Dog cartoon on these days on Cartoon Network, aimed at very young children (younger than the Teen Titans target audience). That’s got to be how she knows.
Because you apparently have excellent taste in women.
No way. You’re yanking my chain. No way.
—googles—
Huh.
“I… like it! It makes me feel… strong… and brave… and tingly…!”
—weeps—
Ask your GF to tell you what the letters in SHAZAM! stand for.
Also, ask her to recite the Green Lantern Oath.
If she can do one of these, she read her father’s/brother’s/prior boyfriend’s comic books.
If she can do both, she is a True Geek Girl—do her honor!
True, she may demand that you then woo her in Klingon fashion, but you must make the sacrifice.
Report your results here.
I’d heard that somewhere.
Another bit of Krypto trivia…
How could Superboy’s pet dog still be vital and active during Superman’s time?
He drank from the fountain of youth.
Well seeing as how he’s a dog, maybe the toilet of youth?
Big Dog! Big Dog!
Bow-wow-won!
We’ll crush evil
Now-now-now!
To be fair, Krypto isn’t really a dog, he’s an alien creature that astonishingly resembles a dog. That he might live for decades shouldn’t really require an explanation, though somebody wrote one, anyway.
I prefer the toilet of youth explanation myself.
Shit, I can’t do either of those. Uh, the H is for Hermes, and the Z, um, Zeus I guess.
Alan Scott’s oath is “I will shine my light over dark evil, for the dark things can’t stand the light. The light of the GREEN LANTERN!” I always liked it better than the sissy rhyming one Hal had, which I can’t ever remember more than a third of.
–Cliffy
Not so much these days, now that a version of them are in the many times mentioned Krypto cartoon series.
Hey, don’t forget Super Gorilla! 
Heck, from memory:
Solomon
Hercules
Atlas
Zeus
Achilles
Mercury
Mary Marvel’s list escapes me, though I know it includes Aurora and Zephyr.
“In brightest day, in blackest night, no evil shall escape my sight. Let those who worship evil’s might, beware my power, Green Lantern’s light!”
Can you do Black Adam’s set?
: Slaps Cliffy with a white Green Lanterning glove. :
Them’s fightin’ words.
Tengu, somebody did Adam’s set for me a few months back, but damned if I can remember it. I think the first letter was Set.
In case anyone is racking their brians over PG’s cat’s name that was a joke. As far as I know that cat doesn’t have a name.
If we’re doing trivia now here’s a relatively simple one: Name Tomar Re’s Green Lantern sector and the most famous planet in it. Well, at one point the planet was in it…
Couldn’t tell you which sector, but the planet would be Krypton.
Try these:
BE1: How did Proty 1 die?
BE2: What secret identity did Mon-El briefly adopt in Smallville?
BE3: Who developed a formula that would let Mon-El temporarily leave the Phantom Zone?
BE4: Name Hal Jordan’s assigned space sector.
BE5: Name the original seven members of the All-Star Squadron.
BE6: Name the original Seven Soldiers of Victory.
BE7: Name the shortest original member of the Justice Society of America.
1 - Sacrificed himself to ressurect Lightning Lad, so Saturn Girl wouldn’t.
2 - Bob Cobb, brush salesman.
3 - Saturn Girl. Brainiac 5 finally perfected it sometime later.
6 - Green Arrow, Speedy, Star-Spangled Kid, Stripesy, Shining Knight, Vigilante, Crimson Avenger
7 - Shortest as in height? Al Pratt AKA the Atom. Shortest in tenure? I couldn’t even wager a guess.
I don’t know about the girlfriend knowing, but I’ve never read a comic book in my life and I would have said Krypto. I don’t even remember where I heard that name, but I believe it was a television cartoon.
My guess: she likes crossword puzzles. Easy explanation of arcane knowledge with no context.