Boss Retaliation... with an AnythingNothing.com gift certificate

Well my boss is an asshole plain and simple, no heart no nothing just a stupid plain asshole. Whether its how she treats us, once an employee had an emergency, her daughter got hurt and she had to go and pick her up. The boss simply wouldnt allow it. She threatens people, and working for her is living hell.... Anyway so many stories to tell. Anyway this is more how we got back to her... maybe as an inspiration to others...

So she is a total shopping addict... so her birthday comes around and we got her a gift certificate to that store that sells only different versions of "nothing" (AnythingNothing.com) - so she got the $100 gift certificate and was sooo thrilled, she never expected that... even invited us all for a drink (cost her $20 so she thought she still made out). However she hasn't visited the site... she did the same evening and found out that she could only spend the money on different versions of nothing, which the shop actually will ship to you (kind of an empty box)... Needless to say when we went home that night we couldnt wait to see her reaction.
So the next morning comes around... she's in a total piss mood...doesnt say a thing... hehe while everyone was silently just smiling...