The Radio Yerevan ("Eriwan" here in germany) jokes are really great! They always follow a question / answer principle with many of them having the "In principle yes".
Another favorite of mine is:
"""
Q: Is it true that carrots are good against erectile disfunction?
A: In principle yes, but in practice there are problems with the fixation.
"""
Q: Is it true that Ivan Ivanovich Ivanov from Moscow won a car in a lottery?
A: In principle yes, but:
1. it wasn't Ivan Ivanovich Ivanov but Aleksander Aleksandrovich Aleksandrov;
2. he is not from Moscow but from Odessa;
3. it was not a car but a bicycle;
4. he didn't win it, but it was stolen from him.
"""