へごる (hegoru) - (of Ayaka Ōhashi) to fumble her words
Etymology
Derived from an incident in a webcast where she misread 客の頭へゴチン(kyaku no atama e gochin, “[strike with a] thunk! to a fan's head”) as 客の頭をへごちん(kyaku no atama o hegochin, “hegochin a fan's head”)