to punch someone on the back, or to put evil in between others (see Molina)
Orthographic Variants:
teputzcomonia
Alonso de Molina:
teputzcomonia. nite. (pret. onitetputzcomoni.) lo mismo es que tepotzcomonia. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 103v. col. 1. Thanks to Joe Campbell for providing the transcription.