I bumped into this word and my first thought was: Gosh!! I have so many things to learn. So, here it is. I wouldn’t dare not sharing it with you.
“Ditto”, what a strange word to be used in English!. In fact, you can use so many other expressions with the same meaning as Ditto , that this must have been the reason why I’ve never felt the need to use it.
But let’s not ramble and get to the point, the point being the meaning of this word .
You use it ,informally, to agree with what someone has just said.
A: What a nice teacher! B: Ditto
Or as stated in the cartoon to avoid repetition.