Parents Guide for
Dumb & Dumber (1994) More at IMDbPro »

There are some fistfight scenes and some minor gun brandishing.

There is one bloody violent scene: Lloyd tears a heart out of living man's chest and puts it into a paper bag. Though it's meant to be comic, it is still rough and may scare children and/or disgust some older viewers.

There is a 'comic' scene in which a male's genitals are crushed through his clothes.

There is a scene involving two men in a bathroom stall in a mildly suggestive situation which is played for laughs.

Plenty of swearing and other vulgar talk.

some sequences of smoking a cigar and cigarettes

Lloyd and Harry drink several bottles of beer. Lloyd opens a bottle of champagne.

When Lloyd comes back home, Harry asks him: "Where's the booze?" Some drinking by peripheral characters in a bar.

Lloyd pours substance called "turbo-lax" into Harry's tea, later we see miserable effects of it.

^some of these scenes may be edited in cut version

A man is poisoned accidentally with rat-poison--he chokes and finally dies.