Paragliding? Been there, done that, bought the T-shirt.

He's gone completely out of his wits.

There are 𝜙(p-1) incongruent primitive roots of p. The fact that there are so many primitive roots causes no difficulty in the theory of the binomial congruence but has caused considerable confusion in the tabulation of primitive roots.

In Acorns the nebb dilating splitteth the two sides, which sometimes lye whole, when the Oak is sproated two handfuls.