I have friends who are like that now. What happened to them? They don't make animal noises at the lunch table anymore or pretend to fight with imaginary weapons. They grew up and told me I need to grow up too and I'm like " Fuck no!" I can read homestuck, play pokemon, watch Cartoon Network, and stick my tongue out of my mouth and make farting noises when I'm pissed..... all I want. It's like the only friends I have left is my childhood friend and my best friend at school. Don't let them forcibly rub there boring mature ways on you.