Buy anything second hand and you might expect to find a few quirky traces left by its previous owner.
And one man found out just how bizarre people can be after picking up a 20-year-old laptop for just £4.
Chrisman01, from Australia, posted his findings on Imgur, after purchasing the BM Thinkpad 365XD for the bargain price.
They included Tetris, a glossary of Australian slang and a worrying amount of Star Trek features.
He wrote: ‘When it boots up, it shows the Windows 98 splash screen, then loads to this. An interface inspired by Star Trek, with no mouse support.
‘You navigate using F1-F12 and the number keys.’
To make you feel extra nostalgic, the computer also contained classic games like PacMan, Solitaire and Crossword.
But the weirdest thing of all was a comprehensive glossary of Australian slang.
Some of these included ‘ankle biter’, ‘amber fluid’ and ‘big-note oneself’ (you can figure them out).