flubbersnaps
Flubbersnaps means any cuss word you want to say, but can't. Just say it and people go, "huh?!"
"FLUBBERSNAPS! I hate chu!"
or
"YOU'RE SUCH A FLUBBERSNAP!" (and you can take off the 's')
or
"YOU'RE SUCH A FLUBBERSNAP!" (and you can take off the 's')