i don't speak japanese - what you say when you're being teased for not knowing Japane

what you say when you're being teased for not knowing Japanese and you're too proud to admit it

'I don't speak Japanese!' when my friend said 'you're so bad at Japanese' and I said 'I'm not bad I'm just lazy'

'I don't speak Japanese!' when my cousin teased me for not knowing the words and I said 'I'm not lazy I'm just confused'

'I don't speak Japanese!' when my teacher said I was the worst and I said 'I'm not the worst I'm just a mess'