cut in
US /kʌt ɪn/
UK /kʌt ɪn/

1.
2.
to move suddenly in front of another vehicle, often dangerously
:
•
The car suddenly cut in, causing me to brake hard.
•
Don't cut in like that, it's dangerous!
3.
to include someone in a share of profits or benefits
:
•
Make sure you cut me in on the deal.
•
They decided to cut their new partner in on the profits.