He picks his nose when he thinks no one is watching.

He was caught picking his nose in public.

He picked his nose in public.

I had to cool my jets and wait for the right moment to speak up.

She is cooling her jets before making a decision.

He needs to cool his jets before he says something he'll regret.

After the argument, he drawn in his horns and apologized.

After the argument, he drew in his horns and apologized.

He draws in his horns when he's around his boss.

After the argument, he drew his horns in and apologized.