Oooh yes, I squee too! I'm full of odd little noises! Lately I've taken to just humming either a single pitch or a sliding pitch note when I exhale to 'soothe' myself. I get really squee when I'm excited, and get all grrry and ughy and mrrrrrowy when I'm frustrated or gruff. Oh, and I also get PRRRREET when I'm happy! I went all squealy with surprise today too... apparently squeaking and stuff isn't uncommon for Auties... Glad I'm not the only one!
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...though fire may burn & flames envelop me, I will arise from the ashes...