But soon, the New York quintet - pizza-box playing member included - were soaked and Culkin refused to stick around any longer.
"That's the end of the show, goodnight," he said before rushing off to the safety of backstage.
Fans soon took to Twitter to air their own reviews of the memorable performance.
Macaulay Culkin in Pizza Underground is the weirdest thing I have ever seen.
The Pizza underground is a bad shtick. nothing more than a former child actor wasting his potential and everyone else's time
Of course Macaulay Culkin keeps being booed off stage with The Pizza Underground - they change Lou Reed's Perfect Day to 'It's a Pizza Day'
I for one enjoyed pizza underground at dot to dot yesterday, they gave the crowd pizza for Christ's sake what more do you people want
Organisers of the Dot to Dot Festival, meanwhile, voiced regret at "some members of the crowd who had to ruin what was set to be an excellent show".
Nottingham was not an isolated incident, however, as The Pizza Underground were met with a similar reception at Manchester's Zoo on Friday.
Thank you so much Nottingham and dot to dot. Sorry that a couple people ruined it for everyone.
Not even fresh slices of pizza could calm the jeerers there and Culkin rapidly left after one punter interrupted his kazoo solo and a stage invasion ensued - the nerve.
- Independent