Jim Harbaugh isn’t above taking shots at people on Twitter, and on Tuesday night he fired off another missile.

Earlier in the day Ohio State athletic director Gene Smith was asked what he thought about Michigan holding spring practice in Florida. He responded with a sick burn:

Ouch.

But Harbaugh was undeterred and answered back a few hours later:

Oh yeah, Jimmy boy took it to another level. The “tattoo fiasco” is obviously referring to the 2011 NCAA sanctions handed down to Ohio State after players received special benefits (including tattoos) because they were on the football team.

As our own Ty Duffy said earlier, like him or not, Harbaugh has made college football more fun.