заглянуть(к кому-либо; Popping in involves coming by without warning, for a good reason or for no reason at all, but usually for a limited period of time. • I thought I'd just pop in and say hello. • I was just strolling by, thought I'd pop in for a chat.Liv Bliss)
заскочить(к кому-либо • He popped in for two minutes. • Why don't you pop in and see us this afternoon? • All I have to do on the way home is pop into the drugstore.4uzhoj)