How about this. Quit being such a bitch about being short, if you are short then you are short. Who cares? What would being 6ft. help you with in life. Do you automatically become cooler when you are 6ft, please someone let me know. How much younger was he than you also?
Don't be such a prick next time, and just offer him some advice, he will either take it or not but at least you are doing the right thing. Personally I would feel bad if I watched someone through their workout and then he squats too much and is totally fucked up, when all I had to do was offer an opinion.
Sidenote: To have a complex is not a good thing either.
Sorry for any flaming if it seemed that way, but I really think people need to help dumb people in the gym, or at least offer it to them. Not everybody came out of the womb with a barbell.