I'm in a shallow left bank, maybe 15 degrees. Right rudder pedal is all the way to the floor. Flight path is curving toward the right. Ball is far to the left corner of the glass tube. Yaw string1, 2, 3 is blowing with the tail end deflected toward the right.
Am I "slipping" or am I "skidding"?
Note that ball is deflected toward outside of turn, but also toward low wingtip.
Update: I've been prompted to edit to explain why the current question is not a duplicate of What is a skidding turn (vs slipping turn)?. That question is primarily about the influence of pitch control inputs on slip or skid. If that question were construed to also encompass my question, it should arguably be closed for being overly broad.
It's a pusher plane with no appreciable propwash over the nose, therefore the yaw string deflection is strongly correlated to the direction of the free-stream airflow
Information about "yaw string" arguably makes no difference and would not change the answer to question. If you go test fly this maneuver in your Cessna 152/172 etc and reply accordingly, you need not tape a yaw string on your windscreen if you'd rather not risk getting adhesive residue on the plexiglass. (But a yaw string actually does work half-way decently even on a tractor-engine plane; there's a still a strong correlation between yaw string deflection and ball displacement.)