What is Dtap?
1.
A ridiculous man when he is drunk. Often rips off pants/jeans as they confine his awesome-ness. Also very elusive and difficult to entertain.
A: Dude, where the fuck did Dan go?
E: I don't know... He's just being DTap. See there're his pants
See
2.
Diptheria-
John needed to go in for his DTaP shot after stepping on a rusty nail.
See