Oh so many decades ago my Sensei demonstrated that unique form of Kuzushi. His uke was one of the larger, stronger men in the class who was resisting demonstrating of a technique by Sensei. When Sensei kissed him on the cheek Paul backed up real quick, stumbled and almost fell down. LOL
I once had nage, a Frenchman, lick my ear at the right moment. Dissolved into laughter and my structure totally collapsed. Most effective atemi I ever received.