If you feel suddenly so anxious for laugh, then it's too late to find ha-ha in dictionary.

In future, you'll laugh at yourself on some things you do now.

Smartass Disciple: Master, what do say about the truth itself ?
Master of Stupidity: Like sex, no fun anymore if all is revealed.

It is sometimes funny to watch some people doing something the wrong way but doing it confidently. Even more funny, they succeeded.

It's sometimes funny to watch some people doing
something the wrong way but doing it confidently.
Even more funny, they succeeded.

When you're young, you say what you feel.
When you're adult, you speak what you think.
When you grow old, you listen to what nature says.