Comparing two things:
* "The new stand-up comedian was funnier than the last one we saw."
* "This movie is funnier than the book it's based on."
Describing something as being more humorous:
* "That joke was funnier when you told it last week."
* "Her impersonations are funnier than ever."
Expressing a preference:
* "I find slapstick comedy funnier than dark humor."
* "I'd rather watch a funnier movie."
Showing improvement in humor:
* "He's getting funnier with each performance."
* "After years of practice, his jokes are much funnier."
Using it as an adverb:
* "She told the story funnier than anyone else could."
* "The actors played their roles funnier than expected."