Reminds me of the velvet bean found in parts of Africa and Asia. It too has hairs and is maddeningly itchy. https://en.wikipedia.org/wiki/Mucuna_pruriens

(On the last day of the term in junior secondary school some naughty kid dusted it on all the seats in the class. I can still see everyone writing in pain. Unfortunately, we'd forgotten about our ordeal at the start of the new term and sat on our seats; only to repeat the painful dance.)

Edit: a lady's blogpost about her encounter with the "devil bean" https://dazeetah.wordpress.com/2013/05/21/my-devils-bean-exp...