If you've already put the finishing touches to your Halloween costume and then realise you need to dash out for a pint of milk, you may find yourself in quite the predicament.
It's not just the fact you will be greeted by glaring eyes as you wander into your local shop that's the problem.
It turns out that driving and dressing up don't really mix well.
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Brits will be preparing to look their best for a weekend of spooky activities, but have been warned to think twice before they get behind the wheel.
An unusual clothing rule in the Highway Code is something that should be considered by fancy dress fanatics this Halloween.
According to Rule 97, motorists must 'ensure that clothing and footwear do not prevent you from using the controls in the correct manner'.
So if you've got Freddy Krueger-style claws on or comically large clown shoes, it might be best to take a taxi. Or just change into some more sensible shoes for the commute, of course.
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Obviously, there's a valid reason behind the rule, which is the safety of yourself and other road users.
Tim Alcock from LeaseCar UK told The Express: "When behind the wheel, it is important drivers have full control and concentration to ensure the safety of themselves and other road users.
"Lots of people enjoy getting into the spirit of Halloween by dressing up and decorating, but this can have a serious impact on driving abilities.
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"To avoid risking a hefty fine, drivers should be extremely cautious and avoid getting in the spooky spirit until safely parked."
That means masks, bedsheets and any other accessories that may hinder your driving capabilities are off limits.
Your extravagant costume could land you in trouble with the law for dangerous driving or if it contributes to a collision.
Driving without due care and attention could see you hit with a maximum fine of £5,000, as well as up to 9 points on your licence.
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The alternative from prosecution is an on-the-spot fine of £100 as well as three penalty points.
There's also the fact that another driver seeing your face spattered in fake blood could also give them a shock.
This could be distracting for other motorists and under Section 3 of the Road Traffic Act 1988 may be deemed as careless and inconsiderate driving.
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Tim added: "Before setting off, drivers should consider how outfits may prevent quick reactions to potential hazards.
"For instance, gloves could make the grip significantly looser on the steering wheel, or a long dress could get caught in the pedals."
It might be best to ring your mum for a lift and give her a fright instead.
Olivia Burke