T-Mobile US is well-known for aggressive marketing tactics that incorporate direct shots at main competitors, and its latest offer for new customers doesn't deviate from that trend at all. Starting tomorrow (December 16th), the company will offer a free year of DIRECTV NOW (worth $420) to AT&T customers who switch to T-Mobile ONE.

For those of you who are confused about why T-Mobile is giving away DIRECTV NOW subscriptions to AT&T customers, it's because AT&T just bought DIRECTV and John Legere enjoys messing with people. In fact, here's what he had to say on the subject:

“AT&T wants you to think DIRECTV is theirs exclusively, but that’s a load of crap. Both DIRECTV NOW and the DIRECTV apps stream free on T-Mobile with a faster, more advanced network that covers nearly every American. AT&T is so distracted by their new businesses and DIRECTV that they continue to ignore their 110 million wireless customers. Luckily, the Un-carrier’s here to show them how to actually take care of customers!”

If you're an AT&T customer and you'd like to take advantage of this deal, you'll have to port two numbers to T-Mobile's "unlimited" ONE plan (the quotes are there for a reason). T-Mobile will grant you $35 in bill credits every month for 24 months, which will cover a year of DIRECTV NOW. It's worth noting that DIRECTV NOW is part of Binge On, which means that T-Mobile customers can watch videos at 480p without biting into their data cap (it's quite a bit more complex with ONE).