Question

I was in the garden covered with mud when my grandmother dropped in for a visit.‎

Accepted Answer

(idiomatichttps://en.wiktionary.org/wiki/Appendix:Glossary#idiomatic) To arrivehttps://en.wiktionary.org/wiki/arrive unannounced or with little or no warning; also, to visit without an appointment.

Sentence	I was in the garden covered with mud when my grandmother dropped in for a visit.‎
Definition	( idiomatic https://en.wiktionary.org/wiki/Appendix:Glossary#idiomatic ) To arrive https://en.wiktionary.org/wiki/arrive unannounced or with little or no warning; also, to visit without an appointment.

I Garden Covered Mud Grandmother Dropped Visit.‎ Unannounced