Dic: cut sb some slack

• Hey, cut me some slack, man, I'm only a few bucks short. 
• Officials have asked the Environmental Protection Agency to cut Utah some slack in enforcing the Clear Air Act.
• I'm going to cut you some slack. Because it's the last day of classes, we don't have to talk anything serious today.
• If you and your kids don't agree about their futures, cut them some slack─explain your views, but don't try to force them to agree.

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△ cut(give) sb some slack: (spoken) to allow someone to do something without criticizing them or making it more difficult.

△ cut sb some slack: (American & Australian informal) to allow someone to do something that is not normally allowed, or to treat someone less severely than is usual.

△ cut sb some slack: to give someone additional freedom

... LDOCE, Cambridge Idioms Dictionary, Cambridge Dictionary of American Idioms