Co Defendant Testifies in Derrick Rose Rape Trial

Derrick Rose's friend took the stand and recounted details from the night of the alleged rape, and explained why Rose's memory of the incident wasn't as clear as his.

Ryan Allen -- who's also a defendant in the case -- told the court graphic details about the night ... including the lighting in the bedroom, kissing the accuser, using lube and a condom and the accuser's pink vibrator. Allen testified the sex was consensual and that the accuser was completely sober.

Rose and Allen have been pals since childhood. The accuser claims they and Randall Hampton broke into her home and gang raped her.

Allen testified he flushed his condom after the sex ... unlike Rose who said he took his with him when they left the apartment. The accuser's attorney asked Allen why he didn't do the same, and he said, "Derrick's condom is a little more desired than my condom."

Translation: Derrick's semen is way more desirable than Allen's. Only one is an NBA superstar.

When the accuser's attorney asked why Allen remembers the night more clearly than Rose ... he said, "People don't know how hard it is to be an NBA player. Derrick had a lot going on with family and basketball." He then bro'd out with Allen, saying ..."I appreciate you pooh."