I Headcanon that when Meliodas gets nervous or anxious he starts to chew on his hair and every time he does Elizabeth has to take it out his mouth because he’ll end up choking on his hair. Even after she does take it out he still does it, it becomes such a problem she brushes his hair back and ties it back in a ponytail so he can’t chew on it anymore.
At first he doesn’t really like it because he likes having his hair down and he doesn’t think he looks good with a ponytail. But after Elizabeth tells him she thinks he looks very beautiful with a ponytail he grows to love it and eventually starts to wear his hair up everyday.
















