Shakes on it - Idioms by The Free Dictionary
shake on it (redirected from shakes on it)
shake on it
To confirm an agreement with someone by shaking hands. I can't believe he broke his promise to me after we shook on it and everything! I agree to the terms of this deal, so let's shake on it.
shake (hands) on it/on something shake hands with somebody to show that you have made an agreement, a deal, etc: ‘OK, I’ll let the car go for $5 000.’ ‘Do you want to shake on it?’ ♢ Let’s shake on it.