Muchas gracias a todos por respondermeHi!
For the second one "A ver si te crees que me chupo el dedo" it doesn't have a litteral meaning.
It is an idiom meaning "Do you think I was born yesterday?"
Many thanks jinti. Yes I did get confused between si and sí.In some contexts, sí (with an accent mark on the i) does that job, but not here. A ver si = let's see if. (Literally, let's see if you think I suck my thumb.)