Bedtime for Bubba

S5, E9: Mama suspects Bubba and his new study partner, Toni Malone, are doing more than study, and when she finds a black lace bra in Bubba's bed, she's sure of it. But, while hiding in Bubba's closet, she discovers that it's Naomi's bra: Vint and Naoami are having sex in different places in their attempts to get pregnant. So the next time Toni comes over to study, Mama goes to bed reassured . . . only to leave the living room to Bubba and Toni to make out.