DS, adult, was about to empty my vacuum cleaner straight into the my wheelie bin. I wanted the dust drum opened over a smallish plastic bag so that there was no loose dust in the wheelie bin. I put my refuse into the bin in tied black bags, occasionally in a smaller plastic bag, firmly tied, of course. Then it turned out that bag I'd grabbed was a plastic envelope which wouldn't tie. I didn't drop it, open, into the wheelie bin as I thought dust would fly out.
DS questioned my sanity as I was on my way to put the envelope in the kitchen bin, lined, of course, with a black bag. (A ridiculously large M&S heavy duty one as it happens, I'd got fed up with thin poundshop ones ripping. Have Brabantia made a metre tall bin?)
My retort was that was tempted to put it on AIBU and canvass opinion - he delightedly encouraged me to do so. Oh dear!
PS DS doesn't know that I'd forgotten which end the drum opens so I had to re-vacuum the hall floor ...