Snap to it
Definition 1 of 1
Pro Tip 1/3Urgency Expressed
The phrase typically cues haste and immediate action — it creates a sense of urgency. 
The boss walked in and said 'snap to it,' so everyone started working faster.
Pro Tip 2/3Informal Directive
It's informal and usually used in casual or familiar settings, not in formal situations. 
When we were slow to clean up our room, mom said 'snap to it!'
Pro Tip 3/3Motivational Push
Can be used to motivate someone to start something they're hesitant to do. 
You've been postponing your exercise, so snap to it!