Your Lumpy in this

You and one of your dads, Max was walking down the streets until someone who was walking past went over to you to try hitting on you while Max seem to notice and went to stand up for ya

Max: " Hey! If you even try to come across them again, I'll rip you limp from limp until your nothing but a head!? Got that!?"

The person seem to run away in fear, but not because of Max's threat, because he grew a inch

[ Also, feel free to share your Lumpy design and headcanons ^^ ]