A movie about Tourette’s syndrome called “ I Swear ” usually elicits a small chuckle and “good title” from someone hearing about the film, which premieres in Toronto. And that’s the reaction director and writer Kirk Jones (“Waking Ned Devine”) wants to dispel — using humor and heart to educate audiences about Tourette’s through this real-life story of John Davidson.

The crowd-pleaser bows Sept. 7 at the Toronto Intl. Film Festival. Bankside is repping international sales on the film; Studio Canal distributes in the U.K. while Blue Fox Entertainment distribs in Canada.

Robert Aramayo (“The Lord of the Rings: The Rings of Power”) stars as Davidson, who as a young teen in the early 1980s was diagnosed with Tourette’s at a time when it wasn’t understood. Davidson struggled but in adulth

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