Harley skipped, hopped and twirled after Riddler, leaning down to examine his traps excitedly, making all the appropriate Ooo and ahh sounds.

"Oh sure! Some bait! Or a lure! Or a signal of some sort. Maybe you could start a fire and make people think you're some idiot broadcasting his location. Then when they try to sneak up on ya, WHAM BAM POW!" Death by super smart Riddler traps!"

It didn't hurt to butter him up whenever possible.