He's 'having a rough time (of it)'. = He's 'going through a rough time'. [=he is having a difficult time; his life has been difficult recently]
The project still has a few 'rough edges'. [=the project still has a few things that need to be changed or finished]
Don't 'be so rough on them' [=don't punish or criticize them so harshly] for making a mistake.
(..) nice to see you again. I'll be back, Levon. I promise. Cool. Watch out for the toilet paper. - Shh. - It's rough stuff. Pow, pow, pow. I like how she says my name. That's the way it starts, my friend. - You did good. - Thanks. (..)2014 TvShow: Californication Title: Grace Season: 7 Episode 12