1. DUH duhduhduh 'HEY!'
2. clapclapclapclapclapclap 'WOO!'
3. bum bum (bum bum) bum boo (bum boo) duh (duhduhduhduhduh) bungdung (duhduhduhduhduh)
4. DUM bwoobwoooo....dirdirdir dirdirdir (repeat x a few)
5. DUR! DURDUR! (dootdootdat,dootdootdat) DUR!DURDUR! (dootdootdat,dootdootdat) (continues throughout song)
These are quite famous, but it's debatable whether this excellent Never Mind The Buzzcocks round will actually translate to a messageboard.
I could give you the bands if that would make it any easier. They are all famous indie bands with guitars.