TgIIChron 36:16 :והוו מגחכין בעזגדיא דייי ומבסרין בפתגמוהי ומתלעבין בנביוהי‏ : they would laugh at the messengers of the Lord and disdain His words and make fun of his prophets
See the entire entry for bsr vb. to treat with disdain