Blue Danubing
"Surreptitiously" scratching your balls by pinching your crotch in front of your pants. When you do so inside your pocket, it is known as "Blue Danubing Mezzo-Piano." Named after the waltz composed by Johann Strauss.
While having a conversation with someone, he began Blue Danubing by very obviously pinching his crotch. I swear I'm going to get that guy some jock itch cream as a graduation present.
Blue Danube
When your penis goes blue from wanking it too hard. Excessively choking the chicken all day, until the head of your cock goes blue, or even purple.
How's your blue danube brotha? Geese real sore, almost purple Jim.
Blue Danube
When you have been looking for the name of a certain song for a very long time then you finally find it.
Person 1: I just found out the name to this cool electro beat!
Person 2: Not much of an interesting blue danube moment
Person 2: Not much of an interesting blue danube moment
Blue Danube
That very iconic classical waltz tune you hear in many movies and cartoon shows (aka the theme from 2001: space odyssey). Very comedic when you juxtapose it with a chaotic situation.
Uh oh, looks like the neighbor's are fighting again. Alexa, play Blue Danube.