Three teachings Puns

A high school science teacher in California was teaching his kids about the three states: solid, liquid, gas.

After he is finished, he lifted up his tea and said, "What state is this in?"

One student raises her hand and says, "Liquid!"

Which the teacher replies, "No, silly. It's in California!"

Edit: I'm not dad! I'm potatoe.

So my wife is learning sign language in college and will come home excited about all the stuff she has learned and will try to teach me. The only thing I've retained so far is yes and no. So when I ask her something that she wants to say no to, she'll sign it (thumb, index, and middle finger spread out, and then closing, like squishing a bug). I'll reply to this with just the opposite, opening those three fingers. That is not the correct sign for yes, the correct sign is like knocking on a door. Well when she does that to correct me, I yell "Who's there?!"

She's going to divorce, I just know it.

My professor had taught us about these doohickeys called multiplexers, which we sometimes also call "data selectors," in a previous lecture.

At the next lecture we had a review: he would draw a symbol and we would shout out what it represented, and he was hamming it up, acting like a game show host.

He drew a multiplexer on the board and asked the class, "what's this?" "A multiplexer!" some students called out. "Right! Now," says the prof, "what is another word for 'multiplexer'?" "A data selector!" someone answers correctly. But he looks like the student just blew the million-dollar question. "Hmm... 'a data selector'... no, I'm afraid not—that's three words!"

His two young kids have probably learned not to ask him about what he teaches.