メグはときどきケンを困らせる。

to show signs of ...; to have the appearance of ...; to jerk off; to masturbate

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

sometimes; at times

tendon

indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.

to be troubled; to be worried; to be bothered; to be embarrassed; to be stumped