[カチンとくる(カチンと来る);かちんとくる(かちんと来る), kachin tokuru ( kachin to kuru ); kachintokuru ( kachinto kuru )] (exp, vk) (uk) to be annoyed (by); to be offended (at); to be irritated (with)
[むきになる, mukininaru] (exp, v5r) (uk) to become serious; to take something (joke, teasing) seriously; to become irritated or angry (usually at something trivial)