B1g1 free chipotle burrito on grubhub

Buy 1 Get 1 Free Burritos from Chipotle on Grubhub. Free delivery for Prime Members. Go to Grubhub and search Chipotle. Add any 2 burritos and 1 will show that it's free at checkout. No Code needed. Can you do pick up to save on delivery fee as well.