My sister called from Wales to say our Christmas presents were en-route to arrive the following morning. As I had to go out, I asked my pensioner neighbours if they would take it in for me. They said no problem, they'd be home.
Half an hour later, as I drove along enjoying the bright winter sunshine, my sister's voice from the previous night's conversation suddenly popped into my head. My tarantula collecting sister:
"Ignore the box. It has big stickers that say 'contains live insects' but I think I got them all out."