1) The person above you, will give you a word, for example;
Trotter
2) Every letter of that word, in order, will create a sentence. For example;
That
rabbit
over
there
took
every
rose
If you can't think of anything in the world, you may use hyphened words. But only one per sentence. You could break that into two sentences, if there are enough letters for it.
3) Next, you choose a word from that sentence, and bold it. That will be the next word for the next person.
So to review, your post would look like so:
That rabbit over there took every rose