Penis size is a huge topic of anxiety for men - and some resort to bizarre measures to alter their manhood.
According to the NHS, the average penis size for lads in the UK varies from around 5in to 7in - or 13cm to 18cm - when "'erect".
But even if your manhood doesn't measure up, many sexperts and porn stars have admitted that it doesn't really matter anyway.
But men will often do all sorts to appear larger down below - even though the NHS warn you cannot make your penis larger or smaller with exercises or medication.
It comes as an expert has warned lads to stop dunking their penises in apple cider vinegar to boost their measurements.
It started after a series of adverts online showed cartoon men pouring the drink on their penis as "the trick makes any penis increase by 65%".
But if you click on these adverts, they're not promoting apple cider vinegar - instead it's a different pill, Vice reports.
An expert has warned that applying apple cider vinegar to your penis could actually cause a great deal of harm.
Parvinder Sagoo, clinician at Simply Meds Online, told Metro: "I would advise against applying apple cider vinegar to any areas of the genitalia as this could cause irritation, soreness, burning and even cause potential skin infections.
"There is no evidence to suggest that apple cider vinegar can work to enlarge your penis or work to help with erectile dysfunction complications.
"Many people like the idea of home remedies working for them, and apple cider vinegar has been used for other things, such as weight loss, however there is no scientific evidence to back up this wild claim of penis enlargement."
And if you're planning on drinking it instead, that won't do anything either.
Parvinder added: "Many people drink apple cider vinegar diluted with water for health and weight loss benefits.
"However it will have no benefit or impact on penis size or sexual function."
