My step dad hated football, he came from Accrington enough said, he still took me to Peterborough, Everton, Villa Park and both Wembley games in 1981. After the semi final he was checking the oil and water under the bonnet and all you could hear was City fans car horns in the car park ( dog track car park I think) so, this then 16 years old nobhead, decides to have a bit of that! Step dad smashes head on underside of the car bonnet which promptly slipped off its catch and give him a right whack too boot. He drove home complaining of a right headache and then went to bed and didn’t get up until Sunday afternoon. Suppose they’d call it concussion these days.