You see them scrawled on school desks, toilet walls and underpasses across the UK.
However, it seems that the tradition of drawing the male appendage as graffiti goes back far further than any of us would have realised - after a volunteer uncovered graffiti at Vindolanda depicting an explicitly carved phallus. The popular museum has found some hugely significant archaeological finds over the years, including the world's oldest boxing gloves and the largest collection of leather shoes, consisting of around 7,000 items.
Earlier this year, a Roman Altar from the 3rd century AD was uncovered, thought to be from a similar time period to the most recent discovery. Though this one is quite a lot ruder!
