Heat-throb actor BEN STILLER is haunted by his experience of taking LSD - because he called his parents while tripping.

During his college days, the SOMETHING ABOUT MARY star experimented with illegal drugs, but advises others not to do the same. He says, "I tried some LSD with friends in high school, and in my LSD-induced state, I called my parents. "In hindsight it probably wasn't the best idea." (KMW/HET/KW)

Source: WENN