Hackedicht is a colorful and very informal German slang term meaning "plastered" or "wasted" – completely drunk.
It's a memorable word because it paints a vivid picture of extreme intoxication, and it's not a term you'd find in a standard dictionary or everyday conversation. In the song, it perfectly describes the state of Johnnie, Jim, and Jack on Malle (Mallorca) when they are so drunk they can barely speak, adding to the song's humorous and boisterous tone.
This high-energy party song is a hilarious declaration against a specific drink: the Radler. A Radler is a popular German beverage made by mixing beer with lemonade or soda. The song tells the story of three very thirsty friends named Johnnie, Jim, and Jack, who have a strong preference for whiskey (specifically Johnnie Walker, Jim Beam, and Jack Daniel's).
Throughout the song, these friends find themselves in desperate situations, dying for a real drink. First, they're stranded in Hamburg with only one pub open, which to their horror, only serves Radler. Later, while on vacation in Mallorca, they accidentally drink from mugs filled with the same beer-lemonade mix. Their reaction is always outrage, leading to the song's simple and endlessly repeated chorus: "Radler ist kein Alkohol" (Radler is not alcohol). The song's final "moral" is clear: for these serious drinkers, mixing beer and lemonade is just not normal!