Are dog biscuits the new Pampas Grass?

One Sunday Afternoon, I saw a jolly fellow whom I had chatted to on a few occasions. He came over to say hello, and gave me a bag of dog biscuits to give to my dog. What a lovely old man, I thought.
Then he propositioned me for sex.
He HAD knocked back a fair few 7.5% blonde beers.
...But its the dog biscuits that confound me.
Are dog biscuits the new pampas grass?