What is "tubthumping"

1. brash, self-promoting. n. Aggressive political or commercial promotion. v

2. (present participle of tubthump English)

"Tubthumping" is a song released by British rock band Chumbawamba in 1997. It was their most successful single, peaking at number two on the UK Singles Chart. It topped the charts in Australia, Canada, Ireland, Italy, New Zealand and peaked at number six on the US Billboard Hot 100. At the 1998 Brit Awards, "Tubthumping" was nominated for the Brit Award for Best British Single.