heavy weather 

term for difficult times

hard sailing

With the re-elction of Bush, we are in for heavy weather.

heavy weather by Ralph Wombat November 23, 2004

very heavy weather 

A term used by British mathematicians when describing laborious proofs that could be proven much easier

"Dude, I tried to prove Eisenstein's Criterion super complicatedly and my professor wrote on my homework "very heavy weather"."

very heavy weather by LordAlgebro22 May 20, 2018