It is a sex act where the man is on all fours and points his penis back out between his legs. Then the other person also gets on all fours and backs into his penis. They appear to be 2 stray dogs who are attached to each other.
"Oh man last nighty parents walked in while my girl and I where street dogging!"
A Straw Dog is like a stuffed animal for people who can’t afford one. Typically MaMa or GiGi might use some old clothes and shape it like a dog and fill it with straw, hence the term Straw Dog.
I made that old Straw Dog for my daughter when her Gigi passed. I used my mothers old clothes and made a puppy stuffed with hay.