Funny Screw Puns

I didn't even mean to make a dad joke, apparently after seven years of being a dad, it just starts to happen.

I was installing some shelves up on the walls over my computer desk. Having just finished marking the walls where I was going to insert the screws, I was now installing the brackets onto the boards.

From behind me, I heard my wife say, "How's it going?"

Me: "Well, it's shellfish."

Wife: "It's what?"

Me: "Shellfish. I'm still putting the mounting brackets on, so it's not a shelf yet. It's shelf-ish. Shellfish."

At least my daughter thought it was funny.

One student in culinary was getting flour from the bottom of a bin used to hold it. Since there wasnt much, it takes a couple tries to get a few scoops. So naturally:

"Hey student, looks like you're really scraping the bottom of the barrel

Few people laughed so I followed up with "screw you that's funny"

So my girlfriend and I go to different colleges, we see each other on certain weekends. I went see her this last weekend. Before departing I tell her I love her and she replies the same. I wait about 5 seconds before saying "I know I just said that" it takes her a second to figure out that that I'm screwing with her by implying she said, you love me. Not sure if it would be full on dad joke but either way I found it funny and think you guys would appreciate.