TAG vs Rolex

[Grey Ghost]

Rarely people notice the watch I wear, but last evening I had the following experience:
I went to a very good restaurant with my girlfriend and another couple (her friends).
During the meal, the other lady commented - "oh, that's a very nice watch you are wearing, is it a TAG?
"Err... no it's a Rolex DeepSea..."
Noticing my perplexity she added - "Don't be bothered for not having a TAG, yours look like one and I am sure it's a good watch too..."
"Err... thank you..."
During all this time my girlfriend almost burst out laughing...