A figurative location in black culture referring to one's relationship status used to determine if someone is sexually available. Individuals who claim to be "good in the willy house" are presently satisfied with their current relationship status, whereas those who claim to be "outside" or not "good" in the willy house are unsatisfied and/or sexually available.
Ex. 1
Ayo shawty real quick wus good in the willy house w'chu? (are you sexually available)
We ousside if u feel me. (I am)
Ex. 2
Hey wya in the willy house? (Are you happy relationship-wise)
Nah man, my bitch she ain't wanna fuck.