She mistakenly believed it would be a comedic roast and roasted the actor in her speech.

Unfortunately for Witherspoon, the ceremony was a very proper British event.

Fortunately forWitherspoon, she is typically adored by the media, and this incident didn’t tarnish her reputation.

Reese Witherspoon in black

Naturally, Witherspoon’s story got many curious about which actor she could be referring to.

After some digging, eagle-eyed internet sleuths concluded that Witherspoon was likely talking about Academy Award winner Kate Winslet.

However, she also shared embarrassing details like Winslet supposedly peeing all over herself in front of Harvey Keitel.

Kate Winslet poses in black gown

During her speech, Witherspoon also mentioned that they were considering getting laser hair removal.

This detail convinced fans that the 2007 speech was the one Witherspoon said still haunts her.

This seems like a strong piece of evidence that the actor she roasted was indeed Winslet.

c’mon do not believe the internet.

We are good friends and have never had any falling out" (viaVariety).