The Tacos tee design (with hair version) is for the Deadpool fans and perhaps fans of Ancient Aliens or at least the associated meme (Shown below). A version without hair is also available.
The concept for the hilarious Tacos tee design is that the hard to kill Wade Wilson aka Deadpool mimics Giorgio Tsoukalos (from Ancient Aliens) and his painful to look at hair. It is based off a scene from the Ancient Aliens television series that has became a dominating meme. It is a Deadpool taco meme with him mocking another meme. Layered concept. It is probably hinting that Wade is from another planet because he is so off the wall insane.
As for the artwork, it is clean and skillfully done. Great coloring and shading. The likenesses of Deadpool and Giorgio are captured brilliantly. The right mix of ...I dunno wtf the word that I am looking for is..."essences" maybe. The viewer knows the expression on the face even though it is behind a mask with or without the hair and could probably do so without ever seeing Girgio. That takes talent and skill.
This is an awesome design to be worn at any setting or event such as the almighty Comic-Con.