People have taken to social media to share the most savage responses they've ever encountered - and some of them are so sassy they'll have you in stitches.

From cruel parking tickets to offensive presents, men and women have posted pictures of the cruellest and funniest comebacks they've witnessed.

One image shows a teenager who told her parents she wanted "nothing" for her birthday - only to receive exactly that - while another shows a sassy message from a grandmother who was fed up of being ignored by her granddaughter, according to Daily Mail.

As these images attest, some people aren't afraid to hold back...

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This teenager told her parents she wanted 'nothing' for her birthday, only to receive a jar full of exactly that. Photo / @WesChandler
This teenager told her parents she wanted 'nothing' for her birthday, only to receive a jar full of exactly that. Photo / @WesChandler
A pair of siblings found themselves in an argument and the older one found a note slipped under her door written in invisible ink - with this message. Photo / Twitter / @cayyleyyy
A pair of siblings found themselves in an argument and the older one found a note slipped under her door written in invisible ink - with this message. Photo / Twitter / @cayyleyyy
Despite her best efforts, a student who parked on double yellow lines when she was running late was given a parking ticket with a rather savage handwritten message. Photo / Reddit / brody2daMAX
Despite her best efforts, a student who parked on double yellow lines when she was running late was given a parking ticket with a rather savage handwritten message. Photo / Reddit / brody2daMAX
Age certainly doesn't put a limit on sassy behaviour, as this hilariously snide message from a grandmother to her granddaughter proves. Photo / Twitter / @Longdon_kieran
Age certainly doesn't put a limit on sassy behaviour, as this hilariously snide message from a grandmother to her granddaughter proves. Photo / Twitter / @Longdon_kieran
We've all witnessed some questionable parking but this motorist took matters into his own hands with the help of a stick of chalk. Photo / Twitter / @adunkel2016
We've all witnessed some questionable parking but this motorist took matters into his own hands with the help of a stick of chalk. Photo / Twitter / @adunkel2016
This lecturer made it clear that he has absolutely no time for late submissions with a witty message on his chalk board. Photo / Twitter / MrMegaGamerz
This lecturer made it clear that he has absolutely no time for late submissions with a witty message on his chalk board. Photo / Twitter / MrMegaGamerz