Except, Sepp, that there is no such thing as a 'co-pilot' on SPA aeroplanes such as the C152.
Picture the scene. A wet behind the ears pilot goes out to C152 with experienced FI. Wet behind the ears pilot has decided that he will be PIC as he needs to build his hours for some future co-pilot job on 737s.
"Are we ready yet, captain?" asks the FI.
"Err, yes. I think so."
"Oh good. Has it got much fuel in the tanks?"
"Err, the gauges say so."
"Well, did you look in the tanks?"
"How do you do that?"
"Do you want me to tell you?"
"Err, yes please."
"Well, that'll be instruction then.... You are thus P u/t and I, as PIC will give you instruction. Understood?"
"Err, yes"
"Good!"