Does anyone here other than deldaisy like any comedies made BEFORE 1970?
How about all of the classic Hollywood comedies? If you're willing to put your modern biases aside, you won't find that many films that are better written or funnier than The Marx Bros. "Duck Soup" or "A Night at the Opera." Or "His Girl Friday" with Cary Grant and Rosalind Russell. Or "Bringing up Baby" with Grant and Hepburn.
Or, moving into the 1950s, great Billy Wilder movies like "Some Like it Hot" and "The Seven Year Itch" or the excellent Ealing Studios movies with Alec Guinness (King Hearts and Coronets, The Ladykillers, The Lavender Hill Mob).
All these movies can make you laugh out loud with a single fart, poop, vomit or boob joke.