10 POINTS I NEED AN EXCUSE FOR UNLIKING A FACEBOOK PIC RIGHT NOW!!!?

[UsD2Bc00l]

So my neurotic aunt signed up on facebook this week and as the control freak she is she's stalking everyone and looks up their likes and stuff.
Some months ago I had liked a photo of her sb else had posted but I decided to unlike some days ago it bc I didn't want that to appear on my timeline.
No need to say that she called all my relatives and asked why I unliked the photo and she was really angry and stuff.
I know she's insane and I don't want her to be upset with me bc noone knows what she could do if she was (spread rumors and stuff,she does that all the time to ppl she doesn't like)
and that's why I need an excuse RIGHT NOW in case she calls me and asks

SO

What's a good excuse for unliking a photo? Please serious answers,like could I say I accidentally pushed some button that erased all my likes? If that's possible? Please help?