Someone that partakes in mischievous behavior like the character, Calvin from 𝘊𝘢𝘭𝘷𝘪𝘯 𝘢𝘯𝘥 𝘏𝘰𝘣𝘣𝘦𝘴.
Susie’s firstborn is acting like such a Calvinist!
by Mr. Dick Shinary March 19, 2022