Another:
FOI: You can't do this.
Rampee: Yes I can.
FOI: But you can't.
Rampee: Yes, I can and to prove that I can, I have already done it many times and am about to do it again.
FOI: Well, I will rephrase that - you are not permitted to do this.
Rampee; Oh, but that's not what you said; you said I could not do it, and I claimed that I could and admitted that I did, so what's your problem?