Here's a funny one: 'Work is the curse of the drinking classes.' It humorously suggests that having to work gets in the way of having fun and enjoying life.
One funny quote could be: 'Work is like a treadmill. You keep running but never really get anywhere!'
Another one might be: 'I'm not lazy at work. I'm just conserving energy for later.' This quote plays on the idea of finding excuses for not being highly productive.
One funny quote could be: 'I thought this job was going to be easy, but it's harder than herding cats!'
One funny quote could be: 'My migraine is like a cartoon villain that just won't leave!'
Well, one could be 'I'm not just a cute chipmunk, I'm a funny one too!'
Here's another one: 'I think my phone has a mind of its own. It never lets me have a quiet moment!' This implies that the phone is somehow controlling the person's life and causing disruptions.
One funny quote could be: 'This sandwich is so good, it should have its own cartoon show!'
Here's one: 'I stopped believing in Santa when I was six. Mother took me to see him in a department store and he asked for my autograph.'
One funny quote could be: 'Life is like a cartoon, full of unexpected twists and goofy characters!'
Well, one could be 'Trucks may be big, but they have a heart of fun!'
One funny quote could be: 'I'm not just a janitor, I'm a cleaning superhero!'
How about this: 'Autumn is when pumpkins get to show off their curves.' It plays on the shape of pumpkins and makes it funny.