"How I feel after playing a single note on guitar" is a phrase normally accompanied by a caricature of singer-song writer Kurt Cobain, that means that the person saying it feels like they are Kurt Cobain The joke has been taken further now with people using caricatures of other musicians, normally with a caption along the lines of; "How I feel after playing a single (sound) on (instrument)"
1. How I feel after playing single note on guitar: (Kurt Cobain caricature)
2. How I feel after playing a single beat on drums: (Dave Grohl caricature)
3. How I feel after playing a single G note on piano: (Gerard Way caricature)
Fogey/fogy /fougi/ sl. (early 18C+, orig. Scot) old-fashioned, stuck-in-the mud.
Person with old fashioned ideas which he is unwilling to change: Come to the disco and stop being such an old fogey!
You think me an old fogeyand an old tory, his thoughtful voice said. I saw three generations since O’Connel’s time. I remember the famine. Do you know that the orange lodges agitated for repeal of the union twenty years before O’Connel did or before the prelates of your communion denounced him as a demagogue? You fenians forget some things. (James Joyce, Ulysses. Penguin Books,1992. p. 38)