Rare term for a handstand or headstand; the more common word is 鯱立ち (しゃちほこだち). This reading さっちょこだち is rarely used.
See also: しゃちほこ立ち (しゃちほこだち)
「さっちょこだち」 is a rare reading of 「しゃちほこだち」, meaning a handstand or headstand.
The standard word for handstand; 鯱立ち is a more colorful, less common synonym.
The kanji 鯱鉾 (shachihoko) refers to a mythical carp-like creature often depicted in an upright posture, hence the association with a handstand. The reading さっちょこ is a rare variant of しゃちほこ.