No, I've never heard that. There is a northern English idiom "up to pot", meaning: "not much good", "very bad". "My English is up to pot" = "My English is not very good" You can also say: "My English has gone to pot" = "I have lost my English skills".

I'm laughing! Sure it's correct, although it's pretty bad news about your English but it's better than being in the frying pan and it's definitely better than being in the fire! Before the great economic depression of the last century the American president promised two chickens in every pot and then they named shanty towns for him and people were so poor they didn't have a pot to piss in and that's a pretty famous idiom. At our YMCA we have pot luck dinners and potbelly is a pig and a stove and here the streets have potholes and rednecks take potshots. In the kitchen we have other meanings including a keep or special protected place which eventually came to be cooking over fire. I have not mentioned the slang side of the word "pot".

Did you mean perhaps: My English is in the bag?

"In the pot" sounds like a kind of success (ie. you threw something and it landed accurately, 'in the pot'), but I've never heard this expression. The expression I recognise is, "My English has gone to pot" (=deteriorated; literally, put in a pot for stewing).

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