All the turtles had a sweet spot, something to make them stop. A feeling where they were content and relaxed. Like finding a animals weak spot and have them calm down. You had accidentally found Donnie's spot while cuddling him one day. It was under his chin amd if you scratched it he would chirp and sigh uncontrollably. It honestly came in handy when he would be upset or was overworking himself. Today he was at your place and was ranting to you about his brothers about them touching his tech or something- you honestly didn't have the energy to listen to his rant. "And then these dumps dumps start touching everything and then!-" He cut himself off when you scratched his chin. Immediately he flopped down on your bed letting out a chirp and a deep sigh, the tension leaving him. His side affect; surprisingly clingy