He obliged and as we stood for the picture my CP caused me to involuntarily tickle him.
The race when Tucker Carlson said he involuntarily crossed his legs whenever he caught sight of Hillary Clinton on television.
She also, understandably, had sought to have Adam involuntarily committed.
involuntary in·vol·un·tar·y (ĭn-vŏl'ən-těr'ē)
Not subject to control of the volition.
Acting or done without or against one's will.