Borrachera literally translates to "drunken spree" or "binge drinking." It's a central theme of the song, appearing multiple times and even in the title.
While "borracho" (drunk) is common, borrachera specifically refers to the act or state of getting very drunk, often to the point of forgetting what happened. This word perfectly captures the song's narrative of a wild night out with friends that leads to hilarious and regrettable consequences, making it both memorable and highly relevant to the lyrics.
"Qué Borrachera" is a funny, high-energy banda song about a night out that spirals completely out of control. The narrator leaves work on a Friday already feeling ready to celebrate, and one drink with friends quickly turns into a full-blown bender.
By the end of the night he can't find his keys, has no money left for the bus, and knows his wife is going to be furious when he finally makes it home. The song leans into the comedy of it all, especially the punchline where he thinks he's flirting with a woman ("una güera") next to him, only to realize it was actually a guy the whole time.
It's a lighthearted, self-deprecating look at a wild night with friends, told with the playful exaggeration banda music is known for.