So who is going to be teasing him? The other Yorkies? Or the tougher Bulldogs on the block?

Sorry, couldn't resist. I agree with SpiderBBlue -- it is a Yorkie thing. All yorkies at shows are to wear a topknot, red is the bow color of choice at shows.
But just out and about, casual wear, you can find a great variety of boys bows. Check with Ladymom -- she did some really nice special order bows for me with sports themes. She has a nice variety on her site too!
Tell hubby that yorkies all deserve a topknot! Now if I could just get my guys to leave the bows in their hair!!!! Ten minutes and Ben will have his shaken or rubbed right out. Then he winds up with a knot of hair I have to untangle.