I've also heard that black walnut makes some peoples lips go numb.
I have a black walnut log in my woodshed that I am frankly afraid to chunk and try.
My Boys: Joseph (EI); Andrew (EE); Daniel (EE)
My Toys: 10 WSMs (B, C, E, DH, DA, EZ, DZ, EO, DU, DR); 5 - 22.5" Bar-B-Q-Kettles; 2 - 18.5" Bar-B-Q-Kettle; 3 WGAs (EZ, DE, N); 2 SJPs ( DR, DR); 2 Smokey Joes (A, K); Genesis Silver C (DU); Brinkman Cimmaron.
"For when democracy becomes tyranny, those of us with rifles still get to vote"