My friend invites me to a party that starts at 730PM I say: I would totally be the

[Tdol]

It's not passé in the U.S., but it is hackneyed, trite, over-used, and a powerful indicator of absence of original thought. But don't get me started....

I so won't get you started. ;-)

 

[emsr2d2]

The present tense is certainly sometimes used in hypotheticals. I used to play a board game called "Scruples" in which players were given a hypothetical situation and then had to guess how the other players would behave/react in such a situation. Each scenario was worded in the present tense, for example:

You find £200 in a wallet on the ground. Someone is walking just ahead of you and you think they probably dropped it. What do you do?
Your son comes home and tells you he is gay. What do you say to him?
A friend has lost their home and all their money and asks if the can come and stay with you for six months, rent-free, while they get back on their feet. Do you let them stay with you?