"Slash Dot Dash" garnered negative reviews upon its release, with some critics feeling that the song was too similar to FatBoy Slim's previous work.Entertainment Weekly's review of "Palookaville" noted that "'Slash Dot Dash' and its high-BPM (beats-per-minute) ilk — feel(s) half-cocked, like Cook can’t quite commit to the moment."Pitchfork's Johnny Loftus was equally critical of the track, stating that the song is "as empty as the vacuum after the dot-com bust, a tinfoil crumple of store-bought spy guitar and a vocal sample that needles three times sharper than the funk soul brother."
Despite the song's poor critical reception, it performed well commercially in the UK, debuting at number 12 on the Official Singles Chart and spending a total of 3 weeks in the chart's Top 50. The song also entered the top 40 in Italy (where it reached number 27)  and Mexico (where it reached number 6). The song remains his most successful in Mexico.