Answer:
My first is a heir; My second's a snare; my whole is the offspring of fancy; which I sent out of play upon Valentine's day As a token of love to my Nancy.
I give people a huge fright but at the end I'm sweet. I normally celebrate at night when there's less heat.
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.
Squeeze me and I cry tears as red as flesh, but my heart is made of stone. What am I?
Angels and pilots work with me.
When is it bad luck to see a black cat?