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3. DTaP
Diptheria-tetanus-pertussis, three diseases.
John needed to go in for his DTaP shot after stepping on a rusty nail.
1. DTAP
acronym: Dewy Tip (of an) Aroused Penis.

1) Something that is excited and ready.

2) To be over excited about something.

3) To show much more enthusiasm about something than would normally be expected.
Kevin was a total DTAP as he waited in line for the new iPhone to go on sale.

The DTAPs were all in the front row screaming as Katie Perry came on stage.

Dude, don't be such a DTAP - it's just Justin Beiber, wait 15 minutes and he'll be gone.
2. DTap
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
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