Former Mexican President Vincente Fox has mocked President Donald Trump with a T-shirt depicting him as a diapered baby reading 'Can't build a wall if your hands are too small'.

Fox touted the shirts on Twitter on Friday, selling them to raise money for his Centro Foundation 'which is working towards the formation of compassionate leaders for creating a better world'.

The shirts depict baby Trump in a soiled American flag diaper and red tie, building a wall with Lego blocks.

'This isn't just about the wall, it's about ACCEPTANCE, EQUALITY and INCLUSION of all people! Stand up for what you believe in!' Fox said in a statement regarding the T-shirt.

Fox touted the shirts on Friday, selling them to raise money for his Centro Foundation 'which is working towards the formation of compassionate leaders for creating a better world'

Trump is seen inspecting border wall prototypes last month. The size of his hands has been the subject of jokes since Spy magazine dubbed him 'The Short-Fingered Vulgarian' in the 80s

The 'small hands' jibe refers to the mock tabloid epithet, 'The Short-Fingered Vulgarian', deployed against Trump by Spy magazine in the 1980s and resurrected during the presidential campaign.

Trump made building a southern border wall a signature issue of the campaign, and his promise to make Mexico pay for it has drawn outrage from that country.

Despite a budget with meager funds for the wall, Trump has pressed forward, sending National Guard troops to the southern border this week.

Fox, who was president of Mexico from 2000 to 2006, has a history of foul-mouthed outbursts against Trump.

The current border fence is seen from the US side in Jacumba, California on Friday. Trump has pressed forward with plans to secure the border, sending National Guard troops this week

‘If that worn-out baseball glove tightly gripping a turd can be president, then, amigos, anyone can,’ Fox said in a satirical video in September announcing his 'candidacy' for US president.

In the video, Fox mocks the crowd size for Trump’s inauguration, calls Trump’s cabinet a ‘disgrace,’ and says the president has failed to pass any substantial legislation.

‘Amigo, you haven’t passed a f***en thing,’ Fox says.

He also gleefully notes that Trump received fewer votes than his opponent, Clinton.

Fox also holds up a photo of a brick wall surrounding Trump Tower, saying: ‘Mexico would be happy to pay for this one.’