chocolate foot n. the foot favored to use or to start with when running, biking, or kicking; one’s dominant foot. Etymological Note: Perhaps a calque from the German Schokoladenbein ‘favored leg’ (literally ‘chocolate leg’). A similar German word is Schokoladenseite ‘attractive side’ (literally ‘chocolate side’). (source: Double-Tongued Dictionary)
Further reading
A Philadelphia, Pennsylvania, listener says when he was growing up, his family used the word schmutz as a verb. For example, when one parent reminded the other to apply sunscreen to the youngsters, they might say Make sure you schmutz the kids...
Grace in Abilene, Texas, says her grandmother, who was of German descent, would tell children to stop sulking or pouting with a word that sounded to Grace like “mooksie.” Her grandmother was probably using a form of the German dialectal terms...
I wish I would have known this word in when I played school sports. It would’ve got a good laugh.