girls are like cartons of milk, each one has a hotness expiration date

Robin, girls are like cartons of milk.

Each one has a hotness expiration date, and you've got yours.

I'm not saying the occasional guy won't still open the fridge, pick you up, give a sniff, shrug and sip anyway, but it's all downhill from here.

<How I Met Your Mother, s6ep1, Big days>