It's that time of year when high school seniors all around the country start plotting their senior prank. Some are pulled off without incident and others just go terribly wrong like this one out of Grayson, Kentucky.

Seven students were banned from attending graduation last Saturday after they released 10,000 crickets into the halls of East Carter High School in Grayson, Kentucky. Plus, they won’t be able to receive their diplomas until they pay a collective $600 fine.

Some students and parents criticized the “harsh” punishment, but Principal Larry Kiser said the insects were still hiding in parts of the school and costly exterminators had to be called in to get rid of them.

Check out some other senior pranks that didn’t go over so well with administrators.

Cups of water land kids in jail:

And this kids, is why you shouldn’t play with fireworks:

What exactly was in those balloons?

Mayhem!

A wet situation:

Lunch Rats: Students let mice loose during lunch:

Chickens on the run:

Bouncy ball drop:

Rootbeer keg party:

Freshman class sprayed with fire extinguishers:

Post-It-Note plastering: