The Leeds winger was shocked by the Manchester United teenager's man-of-the-match display against Arsenal.
After scoring in the Europa League during the week, Rashford added two more against Arsenal at Old Trafford, while also registering an assist.
And Leeds man Carayol took to social media with plenty of surprise. While his tweets were vague, his first was perfectly timed with the first goal ...
OMG!— Mustapha Carayol (@Muzza_19) February 28, 2016
The 27-year-old took his reaction even further with the second Rashford goal, tweeting:
OH MY LIFE IM DONE WITH FOOTBALL— Mustapha Carayol (@Muzza_19) February 28, 2016
The Leeds man was far from the only one shocked by the Manchester United talent - who looks to have a big future ahead of him.
However, a couple of Leeds supporters couldn't resist a sarcastic response or two to Carayol.
While Rashford is starring for Man United, the Whites haven't quite uncovered their goalscoring saviour, with Steve Evans' men desperately short in the final third at this moment in time.
@Muzza_19 that's what most Leeds fans feel like again. we say same thing about this time every year— jayjay82 (@jwh1982) February 28, 2016