(noun) When something is said or done that appears that it could be on the most suspenseful family drama network in the world... Lifetime! Typically used when overt teenage girls describe their overly pretentious drama going on in their life.
"Hey Dan, stay away from Aly today. She's been having a lot of lifetime moments lately. It's not good for your health to be near her."
"And then David actually threatened to kill himself when I told him that I cheated on him with this other guy I met at the bar, who I found out actually does drugs and I just-"
"STOP! PLEASE! My brain can contain any more of these lifetime moments!"