notadictionary.com
Quand j'ai pas les clefs de chez moi et qu'y'a personne
→ “When I don't have the keys to my place and there's nobody around”
Quand — when (conjunction)
j'ai — have → contraction of 'je' + 'ai', present tense, 1st-p. singular of avoir
pas — not (colloquial negation particle; formal: ne...pas)
les clefs — keys (noun; plural form of 'clé')
de — of / to (preposition indicating possession or location)
chez — at someone's house / home (preposition used before pronouns like 'moi', 'toi', etc.)
moi — me / myself (object pronoun; here indicates possession)
et — and (coordinating conjunction)
qu'y'a — there is → colloquial contraction of 'qu'il y a'
personne — nobody / no one (indefinite pronoun)