I think the worse comment i ever got was when I sent a PP fabric postcard to a couple the week they were to marry. The maid of honor saw it and replied "Oh she has WAYYYY too much time on her hand"...why the bride thought it appropriate to pass this information back to me (all the while laughing) is beyond me.
This is when one must seize the moment to revise their homemade gift list...that gal will get a dollar store coffee cup next time round....I'll be getting the last laugh on that comment!