The fake tweet?
 

did he write it? I doubt it.
how on earth would he know exactly what he would do and use nadia weeks in advance?
how can they include such a lie?
how can they include stuff from outside the house irrelevant to the experience?
all the other clips were of housemates speaking in the house
HATCHET JOB BY BENT PRODUCERS

All the tweets were the truth

The tweet was real, but what was said in it wasn't true.

But not by Perez, by someone else.