(not) give (something) a second thought

without a second thought - if you do something without a second thought, you do it without thinking about whether or not you should.

He'd fire you if he had to - he wouldn't give it a second thought.

• lay a hand on someone
• lay an egg
• lay aside
• lay aside something
• lay at door
• lay at someone's door
• lay bare
• lay bare something
• lay cards on the table
• lay down
• lay down life
• lay down something
• lay down the law
• lay down your life
• lay eyes on
• lay eyes on someone
• lay eyes on something
• lay hands on
• lay hands on something
• lay into
• lay into someone
• lay into something
• lay it on the line
• lay it on thick
• lay low