It could actually be a diminutive or derogatory of guija ("pebble stone"), much less common than its synonym pebble ("callao"), or perhaps of the guija as the common name of the plant Lathyrus sativus, also known as "almorta". But no, here for sure it is a mistake. Or by some derogatory mockery towards the güija ("Castilianization of ouija") or more surely by Wigetta , a pseudonym as a contraction of the nicknames of the yutuberes Willyrex and Vegetta777 in some of their works made in common; which for that matter can be pronounced as 'güijeta'.
* Only one "like" per meaning and day, the more "likes" the meaning will appear higher in the list
