Letters Alone
The visual clues are extremely simple.
A big one and a little one, a protective arm,

leaning towards one another, or in this case, perhaps
with junior
straining to get free…
But what is intriguing him? Ah, his pal the ‘s’…

‘s’ looks up at big R in apparent innocence.
But ‘R’ is not deceived… Add a further tiny visual
clue,
and yes, big R is about to punch the ‘s’.
