You had better at least save your wife, before her time is up, as well.
He started to squeeze off a bullet and then figured he'd better save them.
"I think I'd better save this in case something goes wrong."
She could walk, sort of, but he figured he'd better save that for later.
"They just better save all the good lines for me."
Perhaps in future you'd better save that sort of chat for people who know me.
"I guess I'd better save my power," he said - and stopped.
"You better save me a hit or two, mister," the bride called out.
"If we can't hold the city, sir, don't you think we'd better save the army?"
She started to thank me, and I told her she'd better save it for an emergency.