Do you know me well enough to have my mobile number? Then this Friday, if the weather's nice, then go to Marks & Spencer*, buy yourself some strawberries and cream and any other picnic food you fancy, and then give me a call and I'll tell you where we are in the park.

* Really, nowhere else will do for this kind of thing.

Update: Sorry, that's Hyde Park. Although really, it's the only one worthy of the name The :-)