A pound of these weighs more than a pound of gold. Dinosaurs had them first. After Horse, a Marx Brothers movie John Hancock likely used one to sign the Declaration of Independence.

I'm a craving Some ignore me, some don't need me, some miss me dearly Some are lucky to have me; some take me for granted I will help, and I will give And if everybody gathers, my name is fulfilled

I can be long, I can be short, I might sound silly, or quite sort. I’m written on your birthday cake,

I hold your dirty laundry tight, and keep it tucked away from sight. Yet in another role I play, I slow your plans or block your way.

If you change my first letter, I can become many things. B for water at one hundred degrees Celsius. F for cooking on a grill. T for working hard. S for earth. I'm the posture of a snake.