Synonyms include:
-masturblazing
-weedwhacking
-leafblowing yourself
-disappointing your parents
Mum: *walks in ur room*
You: smokes weed while cumming to thicccc girls
Mum: WHAT ARE YOU DOIN', GIMP BOI?!
You: highjacking, mum.
Mum: GET ON TOP OF THE REFRIGERATOR, RIGHT NOW!!
You: LET ME EXIST IN PEACE!
Mum: SON OF A BITCH
You: HELL YEAH, I AM!
Mum: RHIEWJFHEUIWJKDH3GWIUQJ
the act of intentionally having an off-topic conversation in a thread in order to prevent the thread's original topic from being discussed
When xbabycakesx made a thread in which she posted pictures of her new tattoos, some righteous guardian angel of messageboard crusader hijacked it by posting animated .gifs of nefarious cartoon tubers engaged in devious sex acts, thus preventing her from losing face by shifting attention away from the embarrassing photos she had posted.