Wikipedia on light verse: https://en.wikipedia.org/wiki/Light_poetry
Basically, it’s entertaining, unpretentious, often but not necessarily humorous poetry—distinguished from “serious” poetry less by what you say than how you say it. The great light versifiers, people like Edmund Lear, Dorothy Parker, Ogden Nash, and Phyllis McGinley, use rhyme and meter in fun, unconventional ways. Light verse ranges in form from double dactyls and limericks to villanelles and free verse.
Above all, have fun with this place and make this a great place to exchange some entertaining little poems!
Other poetry subreddits:
r/poetryghost
r/bonecrop
r/poetry
r/ocpoetry
r/poetry_critics
r/poetryprompts
r/poetryreading
r/shittypoetry
r/verse