An expectant mother has graffitied messages around Melbourne’s bayside suburb of Frankston to the alleged father of her unborn baby.

The message, which has been scrawled on laneways, public barbecue areas and public bathrooms over the last few days, reads: “ Chris u need 2 talk 2 me b4 baby is born of don’t bother after.”

The collage of pictures was posted to the Frankston Community Noticeboard Facebook page.

The message has been scribbled around town in different places, appearing here on a barbecue. (Facebook)

The message appears here on a wall. (Facebook)

The Facebook post has accumulated over 11,000 reactions, over 24,000 comments and more than 10000 shares.

It's unclear whether the graffiti has been done by a prankster or a distressed person looking to find "Chris".

While some Facebook users commented on the post expressing their anger over "vandalism," others were more keen to discover the whereabouts of the mysterious 'Chris.'

"I need to know what happens next. Will Chris call? Will she keep her word of blanking Chris once the baby is born?" one woman wrote on Facebook.

A Frankston City Council spokesman told The Age clean-up crews had removed the graffiti.