Lyric discussion by Pink_Floyd_fan 

Cover art for EXP lyrics by Jimi Hendrix Experience, The

I have a DVD on the making of "Axis: Bold Of Love". It shows how you play the songs from it. On "Exp" that guy says he used his feedback and used his wah-wah bar cable backwards.

I also think this song is about a radio talk-show called "EXP" and is about a man called Paul Carousoe and he lives in space and is about to go insane.