2 old men

They didn't meet often
I always remember them with a smile
Just 2 old men . 
European , sat in a cafe across the miles .

They spoke in German .
They always had coffee and cake .
Never anybody else with them .
Was it meeting for old times sake ?

I couldn't understand what they said
The cups and plates neatly stacked at the end
Always leaving a small tip .
Did they reminisce about what they once did 
- Or  as I later learnt ,
Was that an off limits subject ....