For someone (agent -um-; s agent maN-) to pinch someone (loc ref -on) with the thumb and index finger (theme i-).
hapipīngon; manapēpeng
Pinching is engaged in 1) as a discipline for children or a spouse, usually by pinching one or both cheeks; 2) by a lover as a reminder of a secret agreement or to express affection.
-on: hapipīngon