OOOH, I am still laughing!!! Too funny! Since I am an official old lady I haven't had anything that funny happen, but I do get some of the sweet but patronizing and/or rude attitudes that some young like to direct toward the old.
I have some enjoyable moments though whan a very young clerk is having a problem calculating 10%, or 25% or 50% off with the calculator & I tell them what the answer should be & they give me that look that is saying "OMG" she must be a witch!"