You can ask her, too You can ask 'til you turn blue In the past until It's a necessary evil You want me to keep you right You want someone to fill your glass all night It's killing me but that's alright It's just a necessary evil ♪ It's a master pill Never asked for what was cruel You're the last to know It's a necessary evil You want me to keep you right (keep you right) Want someone to fill your glass all night (glass all night) Come show me the reason, I can try (you know I'll try) It's killing me, the pass on by Did you wanna know? Oh, did you wanna know? ♪ It's just a necessary evil ♪ Nah-nah-nah-nah Nah-nah-nah Nah-nah-nah Necessary evil Nah-nah-nah-nah Nah-nah-nah Nah-nah-nah Necessary evil You want me to keep you right (keep you right) Come show me the reason, I can try (you know I'll try) It's killing me, the pass on by It's just a necessary evil