to be disobedient or get out of hand with one's speaking (see Molina)
IPAspelling:
kokohkɑːtɬɑhtoɑ
Alonso de Molina:
cococatlatoa. nite. (pret. onitecococatlato.) desmandarse en hablar. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 23v. col. 1. Thanks to Joe Campbell for providing the transcription.