(adj) A general term that indicates a feeling of awesomeness; a substitute for "good", "great", etc; can also substitute for "sexy", "hot", etc; a high compliment.
That hiking trip was amazing; it was onions on top the whole time.
Letting your nuts flop out of your boxers at someone, and you surprise them with it.
Bro, Joey just popped his balls out, dropping onions, on that old lady at the bus station!
An unnecessarily complex analogy illustrating the intricacies of solving complex problems.
Trying to figure out Medicare is like a spaghetti onion. It’s when you’re peeling the onion to reveal the spaghetti inside, only to get through all the spaghetti and to reveal more onion.
That guy who knows absolutely everything yet lacks any ability to apply said knowledge. He can tell you everything about the processes gone into making the glass jar, how many onions the jar contains, chemical composition of the pickling vinegar, what type of onions they are .... yet has the complete inability to take the lid off.
"Here Jeff, that new project manager is a right ONION JAR, hadn't got a clue which way to turn the spanner to undo that nut!"
it’s a synonym for std’s (sexual transmitted disease).
Hey guys you know that girl from last night, she gave me the bush onions.
An anus that has been fornicated
"My girlfriend told me her sister gave her a punched onion with a cob of corn when she was 13. I need to call her sister."
In 2017, Lorde's secret onion ring account on Instagram (OnionRingsWorldwide) - where she rated onion rings she tried - was exposed. She confirmed it was her on The Tonight Show.
Person 1: "Do you remember Lorde's Onion Rings Account?"
Person 2: *shudders* "That's when we turned to the dark timeline."