Using legal trickery and technicalities to weasel one's way out of paying a bill or debt. Alternately using trickery and technicalities to make one pay a debt or bill despite their having good reason not to.
All it took was one hair within 3 yards of the soup and some Jew Acrobatics to avoid our restaurant bill.
Steve was pulling off some crazy alcrobatics last night. He tried jumping from the roof to the trampoline into the pool, but just wrecked humself on the hedges.