Tyler Rabenhorst-Malone (pictured), 17, allegedly spiked his stepfather's energy drinks with cattle tranquilizers

A Wisconsin teenager allegedly spiked his stepfather's energy drinks with cattle tranquilizers because he thought it was 'funny'.

Tyler Rabenhorst-Malone, 17, claims he had no intentions of harming his stepdad, Bo Klietz, when he reportedly spiked the man's drinks with Xylazine on at least two occasions.

Xylazine is used for the sedation, anesthesia and muscle relaxation in animals such as horses and cattle.

According to a criminal complaint obtained by The Smoking Gun, Klietz, who is a dairy farmer at Klietz Farms, suffered slurred speech, a droopy face and heavy breathing.

At the time of the first incident last year, which took place in January 2018, doctors said Klietz's symptoms resulted from stress, lack of sleep and his consumption of energy drinks.

Months later, in April 2018, his symptoms returned, prompting the victim to suspect that his stepson had tampered with his energy drinks.

According to the report, Klietz stopped leaving his drinks unattended and as a result, the symptoms disappeared.

The victim then reported the incidents to the Rock County Sheriff's Office.

Rabenhorst-Malone claims he had no intentions of harming his stepdad, Bo Klietz (left), when he reportedly spiked the man's drinks with Xylazine (right) on at least two occasions. Xylazine is used for the sedation, anesthesia and muscle relaxation in animals such as horses and cattle

He provided samples of the contaminated drinks to authorities who sent them off for testing.

The drinks tested positive for Xylazine, which Klietz keeps stored in a barn.

Last month, authorities questioned the teen about the accusations and Rabenhorst-Malone reportedly confessed.

Rabenhorst-Malone has been charged with placing foreign objects in edibles and recklessly endangering safety.

His first court appearance is scheduled for March 18. Apparently, this isn't the first time that the teen has acted out.

The teenager's mother also told authorities told cops that her son was expelled from high school last March 'for hacking school emails'.