Act 3

That stand that Koici has that makes things very heavy by saying “ 3 freeze “

A descriptive term for when after everything is going absolutely excellent, everything that could possibly go wrong, does.

The stand of Koichi Hirose from Part 4 of JoJo's Bizarre Adventure, "Diamond is Unbreakable".
This specific act of Echoes only has one canon special ability, that being "Three Freeze".
It basically makes stuff heavier.
Echoes Act 1&2 was centered around "The Power Of Your Words" (for a more simple explanation, Echoes would release a word/sound, and it would play in the victim's mind, making them go "crazy".
Echoes Act 3 surprised a lot of jojo fans, mostly because it had an ability that was very different from the other acts.
*SPOILERS FOR DIAMOND IS UNBREAKABLE*
Three Freeze is used for the first time against Kira Yoshikage's "Sheer Heart Attack (SHA)". It made SHA very heavy, and because Kira had his hand connected to it, his hand also got heavy. Three Freeze was also helpful at the end of Part 4, because Echoes made Kira's hand heavy (again), allowing Jotaro to stop time and kill Kira.

Right after you blow your load in her mouth, duct tape her mouth shut. Then unleash your fury onto her jaw until she is knocked out. Then, take her to the nearest emementary school and tie her up to the flag pole naked.

When Koichi want gravity to go more down

no

This term refers to a form of necrophilia which bears resemblance to act 5 scene 3 of Romeo and Juliet. It goes as follows: Two men go to a graveyard each with a sword. They dig up the corpse of any female in the graveyard. They then proceed to sword fight until someone dies. The winner will have sex with the corpse of the female, and that of the poor man who he has just brutally slaughtered over who gets to bone a rotting corpse. He will then kill himself to replicate the scene in the play.