Source: I Go Too - The Awkward Yeti
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Source: I Go Too - The Awkward Yeti
Link-tree: http://linktr.ee/theawkwardyeti
Comic archive: https://theawkwardyeti.com/comic-archive
RSS Feed: https://theawkwardyeti.com/feed
I read it as the bladder.
I thought it was a testicle for some reason, it is roughly the right shape