How do you deal with being a freak

How do you deal with being a freak Yesterday at school gym after basketball training i saw these two girls weve never met b4 doing the rubberband pull up wrongly which could lead to them hurting themselves so i just walked up to show them how it should be done safely. At first i was not stuttering and they were friendly and it was going ok then in the middle i stutterd and the atmosphere changed. They started looking at me like i just grew a second nose. They became quiet and everything became awkward and i just walked away and continued with my routine. Now i feel like shooting myself in the head. Stuttering is not 100% responsible bcs my poor social skills too..