Call it a front A man says this to her while he tries to seduce her. "You might call it a front but it's real." What does it mean, call it a front?

-ing expression I've wondered what is a contraction for 'Introducing the new macbook pro' on the Apple website. Is it like saying 'We are introducing the new product today.'? Is it similar to use present continuous to express future? e.g. He is having dinner with Ann on Friday.

top off One plausible theory as to why multivitamins might help promote weight loss, suggests Angelo Tremblay, Ph.D., an obesity researcher at Laval University in Quebec City, is that when your body is low on vitamins and minerals, your appetite fires up—prompting you to eat more to replenish the nutrients you’re missing. By staying topped off with nutrients, on the other hand, it may be possible to keep a runaway appetite under control. It seems that the verb 'top off' is used with a meaning of 'stuffed'. Am I right? But in my dictionary there is no definition like that.

What is contracted in this conversation? A: The idea was to learn something about infection. Have him teach me. B: "Has he?" A: In a way. In this conversation, is 'Has he' the contraction of "Has he had himself teach you?

roll with it What is the meaning of 'rolling with it' in this sentence? Michael Fassbender will not look like Steve Jobs — and the filmmakers are rolling with it

Does the expression, 'must have pp.', have two meanings? A couple won a lottery but they used the money to help people and didn't spent a dime on themselves. Here is their conversation. "We didn't know what we were going to do (at first). After we got it, we wrote down all the family names and then all the charities. We had two pages and we kept adding and adding. We must have given away 90 per cent." I think 'We must have given away 90 per cent' means 'We had to give away 90 per cent'. Am I right? I know that the must have pp. expression is to show we are certain about something that happened in the past. e.g. It must have been love. I was taught like this. Does the expression, 'must have pp.', have two meanings?

I mean, we have wood coming out of our ears here with the trees and.. I don't understand this sentence. Can you explain it? A: I mean, we have wood coming out of our ears here with the trees and.. B: There's no way to cut the trees.

Wonder who was up here. What is the meaning of 'up' in this sentence? Would you show me some example sentences? (inspecting a cigaret at a criminal scene) It's recent. Wonder who was up here.

lay it out What is the meaning of 'lay it out' in this conversation? "Tim… I’m just gonna lay it out, otherwise this whole weekend’s gonna suck ass for everyone."