I find the article kinda weird - that it needs explanation, I mean. Aren't oaths as described in the article common in the us? Here in Spain you'll usually hea

I find the article kinda weird - that it needs explanation, I mean. Aren't oaths as described in the article common in the us? Here in Spain you'll usually hear things like "I swear by my mom" (with the implication, sometimes said explicitely, that she'll die if you're lying). It's mostly a kids thing but many adults use it as a figure of speech to emphasize they're serious.