His 10-year-old’s drawing of “Gru” from the children’s movie “Despicable Me” depicted the character “shooting ping-pong balls at his minions,” Goodwin told the Boston Herald. School officials reportedly deemed the drawing as sexual in nature.

So the Arlington, Massachusetts, dad apparently thought an additional visual aid would help.

According to WBZ-TV, the school said Goodwin became agitated, removed his gun license from his wallet, and showed it to Stratton Elementary School principal Michael Hanna.

“During that discussion I compared my legally owned license to carry firearms with the picture that my son drew,” Goodwin told WBZ.

Goodwin also indicated he had access to firearms at home, Arlington police Chief Frederick Ryan told the Herald — all of which reportedly left the principal feeling threatened, a charge the father denies.

“I did not threaten [Hanna’s] life in any way,” Goodwin told the Herald regarding the Wednesday incident.

Police ordered Goodwin to stay away from the campus for the rest of the school year, save for dropping off and picking up his son, the Herald reported. According to WBZ, police also showed up at Goodwin’s residence, revoked his firearms license and removed his hunting rifle — though he hasn’t been charged with any crime.

After the incident, Arlington Public Schools Superintendent Kathleen Bodie sent a letter to parents that read: “This argument certainly went above and beyond the scope of a normal disagreement, and therefore the policies and procedures that Arlington Public Schools have in place were immediately activated to make sure that students, faculty, and staff remained safe.”