Just tough it out. Don't let other humans affect you. Never allow someone to have that power over you. You need to laugh with them and stop seeing ur stutter as a disability. It IS funny. I've laughed at other stutters and they laughed at me. You gotta learn to accept yourself for how you are. Don't worry about it. Just practice ad-libbing or like speaking without planning ur words. Don't follow a script or read from anything. The words have to be original in that moment. Ur brain is anticipating every word and it causes a backup of information. It's purely a reaction in our brain. You can learn to work around ur stutter with practice. Work with a speech therapist. Do something but don't give up. Then let us know how ur doing in few weeks