Comparative:
* "The new roller coaster was even crazier than the last one we rode."
* "Her story about the talking cat was crazier than anything I've ever heard."
* "The weather has been crazier than usual this year, with wild temperature swings."
Figurative:
* "After a long day, my brain feels crazier than a hamster on a wheel."
* "The party got crazier as the night went on, with people dancing on tables."
* "His ideas were so crazier than the rest, it was hard to take them seriously."
Informal:
* "That's the crazier thing I've heard all week!"
* "I think I'm going to do something crazier this weekend."
* "It's a crazier world out there than we realize."