I'm sure most here can relate to this alliecat. As the world did not accept Christ when he was in it, it will not accept us either as He is in us. We should expect to face the same sort of ridicule as Christ did, but thats a blessed thing in the eyes of God.
1Pe 4:12 Beloved, think it not strange concerning the fiery trial which is to try you, as though some strange thing happened unto you:
1Pe 4:13 But rejoice, inasmuch as ye are partakers of Christ's sufferings; that, when his glory shall be revealed, ye may be glad also with exceeding joy.
1Pe 4:14 If ye be reproached for the name of Christ, happy are ye; for the spirit of glory and of God resteth upon you: on their part he is evil spoken of, but on your part he is glorified
Your friends are seeing the affects of Christ in your life. This is a good thing! And should reassure you that His handywork is already evident in the changes he is making in you. They will probably be the first ones to point out your shortcomings as well....like...a Christian shouldn't be doing that! Just hold fast to the Lord friend. I can assure you that even though your friends might make fun of you, there is a part of them, deep inside, that also longs for the peace and happiness that Christ has given you.
Don't let the devil bring you down. You are on the winning side now, and God is already making his presense felt in your little corner of the world.

How do you handle it? Be patient, let God love them through you, and know that you are His child!
Grace and Peace!