What seems to be a high school prank gone terribly wrong is getting no laughs from authorities.

A Lyle High School student allegedly laced brownies with laxatives and served them to several students and school staff last week.

Later that day, seven employees and five students suffered symptoms of discomfort, diarrhea, stomach cramps and bloody stools.

18-year-old Collin Wayne Orth is now facing two felony charges.

Orth has been charged with felony adulteration resulting in bodily harm. That carries a maximum sentence of 10 years in prison and a 20-thousand dollar fine.

He also faces a charge of felony adulteration not resulting in bodily harm.

Authorities say Orth admitted to buying the laxatives and making the brownies.

He must appear in Mower County Court on March 19th.