I have palalia occoasionally, I'll get a word or phrase stuck on a loop and just repeat it to myself over and over, like, "laundry time, laundry time, laundry time," for anywhere from 10 to 30 minutes at a time. I use echolalia a lot as a way of communicating. If someone says something that reminds me of a line from a movie, I'll insert it into the conversation as my followup response. After meltdowns I go completely nonverbal, but after a few hours, my speech starts to return, and I'll use echolalia spontaneously as a way of trying to communicate my thoughts and feelings. One of the phrases I use most often in those situations is, "Boy are you stupid Charlie Brown!" to indicate my anger and shame with myself for having another meltdown.
Echolalia can be a form of self-soothing as well. I'll repeat my favourite lines from books and movies to myself over and over when I'm by myself because saying them and hearing them makes me feel happy. I've been stuck on The Fox and the Hound for days now, and will go about my day reciting, "'Copper, you're my very best friend,' 'and you're mine too, Todd,' 'and we'll always be friends forever, won't we?' 'yeah forever.'" over and over, sometimes dozens of times in a row.
_________________
"Survival is insufficient" - Seven of Nine
Diagnosed with ASD level 1 on the 10th of April, 2014
Rediagnosed with ASD level 2 on the 4th of May, 2019
Thanks to Olympiadis for my fantastic avatar!