when it comes to, that/this … of mine, that/this darn …, that/this blasted …
AときたらB can also express that for a topic A, the most suitable course of action/the most suited match is B. As in 夏ときたらやっぱり海！
Unique rules when forming that grammar are highlighted like this.
Example sentences follow these rules too!
Joining and Nesting Markers:
Verb[た/る] - means that dictionary form and ta form are accepted.
Verb[causative[て]] - means て form of the causative form of the verb.
AときたらB is a colloquial phrase used to mark a topic A that is followed by negative comment about it B (usually criticism). It emphasizes the speaker’s frustration with B. This frustration is sometimes in jest, and can have an endearing nuance.