2 things you never do on a Friday afternoon 

Completely agree. I especially disliked new boiler start-ups on Fridays.

i am a firm believer in not transforming into Superman on Friday afternoons & good luck in finding help that wants to work "overtime" if it calls for that.

Friday is for team lunch and truck stock organizing. 😂

OH yes.... there are PLENTY of non-Friday jobs! Working offshore, there are also "not on the day before flying home" jobs which can also become a real issue if they go sideways!