Les Claypool

Leslie Edward "Les" Claypool (born September 29, 1963) is best known as the lead vocalist and bassist in the band Primus. Claypool's funky, creative playing style mixes finger-tapping, flamenco-like strumming, whammy bar bends (unusual on a bass guitar), and slap technique. Claypool has been close friends with Metallica guitarist Kirk Hammett since childhood and auditioned for the vacant position of bassist in Metallica. Frontman James Hetfield has said Claypool didn't get the position because "he was too good".

If you really must slap a bass, at least slap it like this.