“Come on over if you're not doing anything this afternoon. We'll crack open a bottle of wine, throw on a few steaks...”
It's the weekend. A friend calls to ask you about something. After answering his question, you want to invite him and his family to come over to your house for dinner.
Come on over if you're not doing anything this afternoon. We'll crack open a bottle of wine, throw on a few steaks...
When you're inviting people to visit you at your home, you can use the phrase "come over":
Why don't you and Tina come over this afternoon?
I invited them to come over.
You can also add "on":
If you're not doing anything, come on over.
When you invite someone to hang out with you, you should make sure that they don't have other plans already. It's polite to say "If you're not doing anything" during your invitation:
If you're not doing anything, Keiko and I are taking the kids to see a movie. Would you like to come with us?
The word "crack" means "break". But when you talk about "cracking open a bottle" of something like wine, it doesn't mean that you break the bottle. It just means that you open the bottle. This is a casual, relaxed-sounding phrase.
When you're talking about grilling food, you can talk about "throwing" the food on the grill. This just means to cook the food on the grill.
This phrase is very casual and relaxed-sounding.