4 adjectives to describe tweaks

Peter could imagine all the endless tweaks to Cissie's pride Niggertown would give the octoroon.

I gave him one last little tweak under the ribs: DEAR OLD BOY,Just a hurried line to say that all is forgiven and forgotten.

For caresses, too, I now got grimaces; for a pressure of the hand, a pinch on the arm; for a kiss on the cheek, a severe tweak of the ear.

And Frank did so, giving Diamond's nose a sharp tweak.

4 adjectives to describe  tweaks