lo and behold

to get a big surprise; to be astonished

to be astonished, surprised, amazed, startled

(literary) they (about women or girls)

(colloquial) a girlfriend (a female partner in a romantic relationship)

(formal) Female third-person singular pronoun; she, her, girlfriend

to open / to make (a hole)

to broaden; to become wide / to develop; to progress; to improve / (of a person) to be enlightened; to be inspired; (perfect tense) to be sharp or clever

mouth

(literary) they (about women or girls)