G-Mum - A new slang from London that means 'mums,' but it's also ext

A new slang from London that means 'mums,' but it's also extra because it came from a tiny group of kids who think they’re cool.

'My G-Mum is the best, she even helps me with my homework.'

'My G-Mum went to the shops and came back with 10 bags.'

'My G-Mum called me a G-Mum and I was confused.'