Easy as Falling Off a Log American spoken language informal
Come on John, you're not baby anymore, eating broccoli is easy as falling off a log.
With 10 years of teaching experience, helping kids with their phonics is easy as falling off a log for Ms. Grace.
Jumping Jack 50 times in 3 minutes is easy as falling off a log for James.
'easy as falling off a log' starts with 'an adjective', therefore, it should follow 'to be'.
In the 19th century in the United States, 'easy as falling off a log' was first used alternatively for 'easy as rolling off a log'. When logs were thrown down from the forests to the rivers to send them to the lumber mills. Men decided competitions to check who could stand straight on a floating log till long duration. Most of them fell into the river as it's very hard to remain standing on a floating log.
A problem or difficult circumstance
I'm short-sighted, so forgetting my glasses is a real hair in the butter for my sight.