porcoTensing, is a meme exclamation, originated from the video "Pingu sottotitolato (di nuovo)" where a portion from a Pingu episode is subtitled in italian. Being Pingu language Gibberish the subtitles are obviously fake, and made funny
Porco means pig and it's often used in blasphemy. Tensing is the italian name for the Dragon Ball character Tenshinhan.
Erlend: sorry I couldn't join you guys yesterday. I had to rehearse for a TenSing musical.
Fredrik: really? Because we had eyes on you and a very cute blonde at Laundromat...