Just before pointing out he wasn't dead in an Oscars In Memoriam gag last night, Macaulay Culkin highlighted a big plot hole in his own movie.

The actor is of course the star of classic Christmas comedy Home Alone, which follows a youngster named Kevin McCallister who is accidentally left behind when his family go on holiday. He then has to ward off two intruders as they try to burgle his home.

The 1990 film was an instant classic and spawned a number of sequels – but during an appearance on The Tonight Show with Jimmy Fallon on Saturday night (March 3), Culkin brought up something that makes us question the entire film.

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Related: Home Alone's Macaulay Culkin swears he's not dead after Oscars In Memoriam joke

"This kid's a really clever kid, right?" Culkin said. "Like, these guys are about to break in, why doesn't he just call the cops?

"He makes a master plan, he uses Micro Machines but for real, there's landlines — there are no cellphones but still [he could have called the police].

"I think that's the only thing and I think that's an enormous plot hole."

© 20th Century Fox

The plot hole is just one of many topics of debate to emerge from Home Alone, alongside the question of whether Elvis was really in Home Alone despite dying 13 years prior, and medical analysis of whether Harry and Marv would have made it to the sequel following their extensive booby trap injuries.

There's also one that suggests Kevin's dad left him behind on purpose.

Dark days, indeed!

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