Blake Shelton gave his ol' buddy Luke Bryan a good ribbing on Instagram for the country star's birthday Wednesday (Jul.17). It was so good, Shelton handed Bryan two loving insults in one post!

Said Shelton on Instagram: "Throwback to when @lukebryan wore clothes that actually fit him.. Happy Birthday shithead!!"

Shelton's photo was indeed a throwback of the two much younger chaps, each holding a glass of wine and donning black formal attire. And let's just say Bryan has opted for much tighter-fitting jeans since this photo.

It's no secret the two country stars enjoy roasting each other, as seen on a recent hilarious Good Morning America one-on-one interview that Bryan did with Shelton, but it's all in good fun. In fact, the interview was in promotion of Shelton's new venue the Doghouse — an extension of Shelton's popular restaurant Ole Red, in his hometown of Tishomingo, Okla – so Bryan must secretly like him a little bit to help him out. The two also performed at the new concert venue in May for the grand opening.

As two of country music's biggest stars, Bryan and Shelton have a friendly competition going between their respective TV shows, with Bryan acting as a judge on American Idol and Shelton holding fort as a coach on The Voice. Both shows have remained popular with music fans.

Both Shelton and Bryan are now 43 (Shelton is a month older, with a June 18 birthday), and neither show signs of slowing their musical legacies. So who will win the great roasting battle of Shelton vs. Bryan? Bryan didn't mark Shelton's birthday this year on social media (he was likely too busy on tour) but we can't wait to see what shenanigans he comes up with next year!

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