Apart from his Other idiosyncratic elements 'died' and 'left' of Erdős vocabulary I found the following particularly amusing: # children were referred to as "e

Apart from his Other idiosyncratic elements 'died' and 'left' of Erdős vocabulary I found the following particularly amusing: # children were referred to as "epsilons" (because in mathematics, particularly calculus, an arbitrarily small positive quantity is commonly denoted ε); # to give a mathematical lecture was "to preach" and # to give an oral exam to a student was "to torture" him/her.