drop in
US /drɑːp ɪn/
UK /drɑːp ɪn/

1.
langskomen, binnenvallen
to pay a casual visit to someone without making a prior arrangement
:
•
Feel free to drop in anytime you're in the neighborhood.
Voel je vrij om langs te komen wanneer je in de buurt bent.
•
I might drop in on my way home from work.
Ik kom misschien even langs op weg naar huis van mijn werk.