fezzy back 

the excruciating lower back pain you get from standing at festivals all day

i need a sit down lads got major fezzy back

fezzy back by costadelmerseyside June 28, 2022

The backdoor fizzy 

It's when u collect semen and sweat out of the asshole of your partner , add vodka and orange and then put it in a soda stream to add some well needed fizz

Robs swinger's party was going so well , he kept providing the backdoor fizzy all-night

The backdoor fizzy by Antonio ravioli April 22, 2018