I need some help with drawing me and my friend's tattoos?

I know a lot of people are gonna say "you two are idiots!" but me and my best friend have known each other for years and a while back we started affectionately calling one another Thumper and Bambi. When she turns 18 she and I are going to go get inked, me getting Thumper on my left bicep and her getting Bambi on her hip. What I need help with is some way to make the tattoos connected. Like when some couples or whatever get tats where one has a lock and the other a key. We obviously can't use the lock and key because 1)we're not dating and 2) we crave originality. Thanks for the help!