Adults wearing football tops, only excused if playing football or at the very least going to a game (but even then , should be executed.
The only football top I've bought in the past 20 years was an Ajax top signed by Kluivert which I bought visiting the Ajax shop in the Dam. It's never been worn.
Even when I was playing 5's up until the age of 35 I still hadn't worn a football top in donkeys. Once you get past 20 that should be it, finito.
Any sports tops in fairness. My darts team had a match last week and two oppostion players were wearing Phil the power darts shirts. The worst one i've seen though is people going to horse racing wearing replica jockey silks .