There apparently is no minimum age to being a Cubs critic.

A video posted by TMZ Sports this weekend showed a young fan attending the Cubs Convention calling team chairman Tom Ricketts the “cheapest owner in baseball.”

Ricketts then asked who the boy’s father was, apparently assuming an adult put the kid up to issuing the insult. The video cuts off before we see how the interaction ended.

Cubs fans have regularly criticized Ricketts for not putting enough money into the team’s roster. That criticism ramped up after the Dodgers and Mets made big splashes in the free-agent market this offseason.

‘‘We don’t have the kind of resources that the Dodgers have, and we don’t have the kind of resources that the Mets have currently,’’ chairman Tom Ricketts said in a conversation with the Sun-Times earlier this month. ‘‘And there’s a couple of other teams that are funding their baseball budgets from outside of baseball revenue. But we’re still one of the top teams, and we should be putting one of the top payrolls on the field every year.’’

The Cubs’ financial books aren’t available, but Ricketts consistently has said that baseball revenue — from ticket sales, concessions, TV and sponsorships — determines the budget for the next season. Last season, the Cubs finished seventh in the majors in payroll at about $229.6 million, according to Spotrac.