This is the 6122nd most frequent Japanese word.
オヤジ
"オヤジ" (oyaji) is an informal term meaning "dad," "old man," or "middle-aged man," often used casually or humorously.
In this context, "オヤジ" is used to affectionately refer to one's father in an informal manner.
うちのオヤジは料理が得意です。
My old man (dad) is good at cooking.
Here, "オヤジ" is informally referring to a middle-aged man, often perceived as someone who frequents casual places like izakayas.
あのオヤジはいつも同じ居酒屋にいる。
That middle-aged man is always at the same izakaya.
In this usage, "オヤジ" is part of the phrase "オヤジギャグ," which means 'dad jokes,' playing on the stereotype often associated with middle-aged men, particularly fathers.