出典:Wiktionary
avocado + hand; analogous to earlier-attested terms on the pattern of [role/activity/object] + [body part], such as tennis elbow, bed head, runner's knee, farmer's lung, miner's lung, and woolsorter's disease; newer examples include sex hair, Tetris brain, and avocado hand.
avocado hand (usually uncountable, 複数形 avocado hands)