U: 🙂
M: hi, I have sad news here
M: I even missed you for it this afternoon. super sad
U: really
M: yeah
U: what is it
M: about that tire pump.
M: I don’t know how to use it
U: it turned out to be a water pump maybe
M: later on, I found that I bought a wrong tire pump
U: how can it be wrong?
M: it’s presta only but the valve of my bicyle is schrader
U: oh ok
U: i thought all pumps were the same
M: me too. I  thought all the valves are same.