Simple play on the word 'tax'  provides a Daily Mail headline of 'My Hobby May Be Taxing But It's Fun!' on a story that 12 year old Jude Currie from Cobham, Surrey has amassed a 12,000 strong collection of vehicle excise licence discs (for car tax).

If you describe something as "taxing" it can mean it makes you feel tired (or maybe *tyred).