Joe Jonas was anything but down in the dumps when he turned 35.

But the same couldn't be said about his birthday festivities—one of which was hilariously themed after poop—as the Jonas Brothers singer rang in his milestone with family, friends and fans alike.

Joe's weeklong celebration began on Aug. 15, when his brothers Nick Jonas and Kevin Jonas surprised him with a three-tiered cake during their concert at the Illinois  State Fair. In fact, Joe got into the spirit of things by donning a denim cowboy hat bearing his new age.