Welcome to the Church of the Holy Cabbage.
Lettuce pray.
Holy Cabbage Church
Explanation
Explain Bear
Listen up, dumb dumb. You probably eat your veggies without even thinkin'. This joke is a pun. "Lettuce" sounds like "let us." The joke set up a fake church of cabbage and then said "lettuce pray" instead of "let us pray". It's funny 'cause it's unexpected and kinda silly.