Nope, I'm not talking about Samson... Did you know that Samuel also didn't cut his hair? His mother promised that he would be a Nazarite, thus never cutting his hair.

1 Samuel 1:11

11 And she vowed a vow, and said, O Lord of hosts, if thou wilt indeed look on the affliction of thine handmaid, and remember me, and not forget thine handmaid, but wilt give unto thine handmaid a man child, then I will give him unto the Lord all the days of his life, and there shall no razor come upon his head.