What's the worst Christmas present you ever gave?

OK - you see something in the shops and think it looks nice, maybe a bit zany, perhaps you'd even had a couple of drinks at the time, maybe it was Christmas eve and the shops were about to close.
Whatever the reason, you've given someone a present and then watched with horror as they've opened it in front of you and you realise that yes, you've actually gone into a shop and paid money for 'THAT'.

I once gave my girlfriend a cardboard clock for our first Christmas!!??.
I clearly remember the look of puzzlement on her face as she looked at it and then gamely tried to look happy.

We did get married many years later and I've always tried to make an effort with presents as I'm still haunted by the cardboard clock.

Anyone else got any admissions?