This terminology would be used by an ATCO if you were being offered a speechless homing procedure. There's a bit about it in CAP 413 Chapter 8 Page 4. Not applicable in your case, but useful to know about
As a non-ATCO pilot, I've practised this at a civilian field - no prior arrangement, but the resident Instructor did it often and the Tower were happy to oblige. Disappear into the local area and on the way back, make your speechless call. The ATCO then goes through a series of questions to ascertain who you are and what you want. You respond using the speechless code.