Aliya Vekotz Ba - אַלְיָה וְקוֹץ בָּהּ
Pronunciation: Ali·ya ve·kotz ba
Literal translation: It's gotta have a catch, mixed blessing, fly in the ointment
Did you ever purchase what looked like the most delicious pita filled with shawarma, and thought you're about to fill your stomach with god's greatest creation ever, and after you took a bite realized that the pita is filled with amba (mango sauce). And you hate amba. That is exactly what the Hebrew phrase, aliya vekotz bo describes. Something good with a bad side to it.
