The effect of beer or any other alcoholic beverage to slow down brain fuction enough to convince a person that the song they are listening to (initially condidered to be crap) is actually moderately enjoyable. The effects usually continue to progress further by the person becoming convinced they can dance to the music, and thus finally resulting in the consumer screaming out onto the dance floor and expressing in a drunken slurr that... "Dude, this song F*$5KING ROCKS!"
When you're chatting away to your best friend and she suddenly whips out her phone and starts to message other people and says the words she's typing while at the same ignoring everything you are saying to her!
You just Beephoneingoramoused me there, didn't you?