The article deals with personal-numerical characteristics of Bulgarian verbs of “behavior”. The study of the frequency of use of such verbs in various personal-numerical forms is based on the materials of the Bulgarian National Corps. Considering the features of the verbs of “behaviour” as a semantic type of predicates, we observe the uncharacteristic use of these verbs in the first person singular and plural. Conditions for implementation of first-person forms are described. The Corps materials give the possibility to highlight the main contexts where the prohibition of first-person forms is cancelled.