Was heißt »spaßig« auf Englisch?

Das Adjektiv »spaßig« (auch: spassig) lässt sich wie folgt von Deutsch auf Englisch übersetzen:

Deutsch/Englische Beispielübersetzungen

Oh, oh, oh! Ein betrunkenes Eichhörnchen! Das wird sehr spaßig werden.: Ah! Ah! Ah! A drunk squirrel! that will be very funny.
Sieht das nicht spaßig aus?: Doesn't that look fun?
Das ist nicht sehr spaßig.: This isn't much fun.
Es wäre spaßiger, es so zu tun, wie Tom vorgeschlagen hat.: Doing that the way Tom suggested would be more fun.

Whether a joke is found to be funny depends strongly on the culture.
You're a funny girl.
It is not funny at all.
It's funny how Esperanto activists still engage in Volapük bashing even though Esperanto has leapfrogged Volapük to near-extinction over the course of a hundred years.
That's not funny.
Tom laughed at all of Mary's jokes, even the ones he didn't think were funny.
Tom laughed at some of Mary's jokes, but he thought some of them weren't very funny.
Tom has a funny way of laughing.
Tom looks funny wearing those shoes.
I've got a funny feeling about that guy.
No funny business!
My mom looked funny with a mud mask on her face and rollers in her hair.
The movie wasn't as funny as the book.
She told him a joke, but he didn't think it was funny.
That will be funny.
This milk smells funny.
Coming face to face with a dinosaur was a funny experience.
The brave sentry thinks it's funny that most Spanish 3rd-person-sentences have six possible ways of being translated to German.
Reading the letter that he sends me every month is quite funny.
He has a funny name.