Yukko says it almost exactly like the duolingo sentence "kono kabocha, katai" except she says "katee" instead of "katai". It is a kind of slang, e.g. "janee" instead "janai".

Duo does not hold back with these.

Sometimes people criticize duolingo for having weird sentences that they do not find very useful.

Oscar was painting Lucy and my man does not hold back.

My man Falstaff has no chill in him.