/ So nice to be working from summer house. I’ve picked mushrooms every day! /
/ How is it going at the office? /
/ … / There are lot of boletes here too… /

This is idiomatic. Having a ”boletus in the forehead” is a euphemism for ”dick in the forehead” meaning you’re really pissed and frustrated. The phrase may have a little different meaning in English…? (Googling led to confusion)