a lot of racial slurs sound funny.
honky
peckerwood
junglebunny
gook
camel-jockey
and no, it's not racist to laugh at how silly and stupid they are.
George Carlin (RIP) was the master at this.
i remember back in highschool they made us take a day long class about racial slurs and tolerance and all that, god knows why. at some point during this class we all had to write down all the slurs we knew for all different groups, white, black, women, asian, etc etc, and the teacher would write them all on the chalkboard. our class was pretty diverse and there were a lot of colorful terms written down. we all spent most of that class laughing our asses off at the stuff written down. the teacher got quite pissed.