chance (one's) arm(redirected from chancing my arm)
chance (one's) arm
slang To do something risky in pursuit of a desired outcome. I think he's chancing his arm by dumping his life savings into yet another bizarre money-making scheme.
chance your armBRITISH
If you chance your arm, you do something risky or daring in order to get something you want. Sport is about going out and giving it your best shot, chancing your arm for glory. Instead of going on the dole I chanced my arm on a business.