Jack O'Donoghue's mum told him off after Munster last played Northampton - and he insists the Reds won't react this time if the game turns old school again.
O'Donoghue got involved in a second half scuffle when the sides met at Franklin's Gardens in December
While the back row's sin-binning seemed harsh, it was the first of three for the Reds in 15 minutes that left the visitors scrambling.
