you're/he's/she's on

: you are

: that male one who is neither speaker nor hearer — compare him, his, it, she, they

used in a generic sense or when the sex of the person is unspecified

: a male person or animal

: one that is strongly masculine or has strong masculine appeal

: the 5th letter of the Hebrew alphabet — see Alphabet Table

helium

: that female one who is neither speaker nor hearer — compare he, her, hers, it, they

used to refer to one regarded as feminine (as by personification)

used as an alternative to he to refer to a person of unspecified gender

: a female person or animal

: she or he