Grammar fix
nip out
go out briefly for food
go out quickly for a short time, often to buy or grab food
phrasal verbB1core
Hear it in context
Notice where the phrase sounds natural.
I'll just nip out for some milk, we're nearly out.
Shall I nip out and grab us a couple of sandwiches?
Fix the pattern
One small grammar move makes it sound right.
Using it for long trips; 'nip out' is always brief.