The phrase "Let him cook" is a slang expression meaning to allow someone to do what they do best without interference. It implies giving someone space to plot, strategize, or showcase their skills, often in a positive or supportive way

. Origin and Usage:

• The phrase originated from rapper Lil B's catchphrase "Let that boy cook," which he popularized around 2010. Lil B described "cooking" as taking time and care to do something well

• On the internet, it is often used metaphorically, including in contexts like flirting or making bold statements, where people say "let him cook" to encourage others to let someone express themselves freely without criticism

• A popular meme format uses the phrase humorously, sometimes with images like Woody holding Sora back from Kingdom Hearts, symbolizing holding someone back from "cooking"

In Sports:

• The phrase gained traction in American football, especially relating to Seattle Seahawks quarterback Russell Wilson. Fans used "Let Russ Cook" as a rallying cry to encourage letting Wilson take charge and perform freely on the field

• However, after Wilson's trade to the Denver Broncos and some underwhelming performances, the phrase began to be used sarcastically or ironically to critique him

Summary:
"Let him cook" is a versatile slang phrase meaning to let someone do their thing, often used to support or humorously comment on someone's actions or statements. It has roots in hip-hop culture and has been widely adopted in internet memes and sports fandoms, notably linked to Russell Wilson's career