Yes-- I've talked about this before on other posts.  My wife was not at all disappointed with my height.  Truth be told, she finds tall men to be threatening, domineering and scary, not attractive.  So, ultimately she rather preferred to marry one on the shorter side of average.  She met me and fell in love with me well before I fell in love with her.  She noticed me for my charm, my wit, my intelligence, and our shared faith.  I'm a go-getter, type A personality leader, and she was so attracted to all that, that having me be really short didn't matter. (She's 5'2) We shared a wonderful circle of close friends, and we still spend time together with them 30+ years later - all very happily married.  I kept assuming that she was just settling for an inferior product and it took a long time for me to figure out she wasn't, and that she never felt that way.  

How did we meet?  We were both attending a church-based group for young unmarrieds in their 20s.  We got to know each other at a lot of social events.  Great way to meet and get to know others. 

Think about how your retort is going to be taken, who you are speaking to, and what you want your future relationship to be.  That said, here are some of my retorts:

"What I lack in height you lack in tact."

"I didn't choose to be short, but obviously you do choose to say unkind and stupid things."

"Gosh, where did that come from?  I had no idea you were so insecure."

"Now that we've gotten that over with, do you have anything important to say to me."

"I see you've mastered the obvious.  Ever tried saying something important, kind, or constructive?"

"Wow. If that is your only way of judging people, you are way more shallow than I had imagined."

"How long ago did you abandon kindness and go over to the dark side?"

Here are ones when you are around someone who should care ( friend, relative) , and who you want to be friends with in the future:

"Being short is hard enough. Did you intend to make it harder?"

"If you'll forgive me for not bothering to respond to that unkind remark, I'll forgive you for making it."

"Only very insecure people pick on others. Would you like to meet for coffee so I can help you get over your insecurity?"

"My height is a God-given fact.  Your remark is a moral failure."

Here's the key to it:  Our shortness is something we did not choose, nor is it the result of any failure on our part.  Their unkindness is something they choose, and it's a moral failure on their part.  Your retort needs to address their lack of civility, not the way God made you.  

Just to give you a different perspective:  I'm even shorter than that - only 5'4".  Junior high school was the worst-- senior high a little better -- in terms of getting insulted and pushed around by my schoolmates who loved lording their size over me.  So, I designed my adult life carefully.  I am in a professional academic position in which size is totally irrelevant and never brought up.  I found a woman who loves me as I am - she is very uneasy around large men - and finds me sexy.  We've been happily married almost 32 years.  I'm telling you this to encourage you to find better friends, find a woman (indeed-- they do exist) who doesn't mind or prefers having a smaller man for a mate. Find a job in which size is not a big deal.  The only time I get insulted about my size now is about once every 3 years from a knucklehead relative or a total stranger.  I now ask them why they are so insecure that they feel compelled to try to bully me.  I ask them what makes them feel inferior.  They have no answer, and they don't do it again.  

Anyway-- keep up the conversation - we're all here to support each other.  Women and tall men have NO idea what we go through. Only we do, so interact with us. You'll find it helpful.

Interesting question, Braeden.  Are you really 6'0"?  If so, why are you are on this forum?  It is extremely rare that anyone above 5'7" ever cares, knows, thinks about, or can even imagine the lifetime challenges that short men face.