Another post reads: "In the future, I'll smoke American Indian cigarettes. Dad won't approve, but he's a feminist.
"The account has gained hundreds of followers in a few hours and puts baby Gosling in the same class as Prince George and Blue Ivy, who have also inspired parody Twitter pages.
"I may or may not be already dating apollo bowie flynn rossdale," one of the tweets said in reference to Gavin Rossdale and Gwen Stefani's six-month-old son.
Mendes, who began dating the Canadian actor in 2011, gave birth last Friday, according to US Weekly.
Their representatives are yet to respond to requests for comment.
While many fans tweeted about their state of emotional despair over the baby news, others spawned a new #heybaby hashtag and shared hilarious spin-off "Hey Baby" memes.
"Hey Baby, how about I grab you a delicious bottle and we talk about your feelings," read one such meme.
"Hey Baby, you don't have to wear ruffled headbands. Gender norms don't define you," another said.
- AAP
