Context: I’m Spanish but studied my Bachelor degree in the UK. This is more an anecdote on what is considered “strange” in my country but totally “normal” for me.

After inviting a few Uni friends to my hometown in Spain, a baffled former British friend said it was “really strange that Spanish people drank during lunchtime and dinner just for the pleasure of it rather than to get drunk”. She thought it was a “waste of money” to drink without actually getting drunk.. She was d**d serious.

That was a real cultural turning point for me.

If you ever find yourself surrounded by three or more Spaniards and want to start a mini civil war, you only have to ask "With or without onion?". You don't need to specify what; they'll all know instantly what you're talking about. In the highly unlikely event that they all were in agreement, there is a follow-up question guaranteed to succeed where the former one failed: "Raw egg, or fully cooked?" (although the degenerates who like their egg raw refer to it as being "juicy" or "Galician"). You'll have a massive argument going on in no time!

What can I say, we take potato omelette very seriously.