From: The Record Online News Service-
An urban legend termed the "Visine prank" suggests that tetrahydrozoline causes violent diarrhea if taken orally, popularized in the 2005 comedyWedding Crashers, where one of the main characters puts eye drops in a rival's drink.
The film scene is alleged to have inspired a number of copycat crimes. Five high school students in Milwaukee nearly killed a classmate by imitating the prank in June 2006. A Wisconsin woman was jailed for 90 days for repeatedly poisoning her roommate's water with Visine in 2011, confessing that she got the idea from the movie. In March 2013, a California man was charged with domestic violence and poisoning after he spiked his girlfriend's drink as a prank following an argument between the couple.
A Google search for "Visine prank" yields over 19,500 results, including several more cases of poison pranks, most occurring from 2005 onwards."
From KPRC today-
A Michigan man has been sentenced to 60 weekend days in jail after his wife installed hidden cameras in her kitchen and caught him deliberately poisoning her coffee.
https://www.click2houston.com/man-se...poisoning-case