Here are some randomly selected joke topics beginning with the letter 'L'
Listening
Of course I'm listening to you don't you see me yawning?
Litterbugs
Which type of bugs are the messiest
litterbugs.
Listened
Joe: Oh, I wish I'd listened to my mother!
Will: Why? What did she tell you?
Joe: I don't know! I didn't listen!
Live
Knock knock.
Who's there?
Miri.
Miri who?
Miri me and we'll live happily ever after.
Litter
I hear you were born on a farm. Any more in the litter?
Live
The more you complain, the longer God makes you live.