Coworkers judging my coffee choices

My workplace have a very good coffee corner, a good espresso machine, coffee bean grinder, different kinds of beans, a lot of options for flavored syrups etc. Daily i make myself an iced spanish latte.
My coworkers asked me the other day how I liked my coffee, i told them that I like iced spanish latte, and they said ‘so you like milk with a slight flavor of coffee’ in a way that was intended as sarcasm.
This took me off guard.
These are the people i work with and show all the patience that i have to them, but man they are are testing my limits.