Can definitely notice a difference when I'm on/off testosterone, especially high dose 2,3,4g. Even noticed the change with first couple cycles in high school. Add in proviron and tren and its a bigger difference still.
"Drug-drugs"? Ecstasy, hands down... So long as you don't plan on fucking her that night. Although, with X, you're just as likely to decide to driven to Vegas and marry the girl the same night, and wake up the next morning and Have no clue what her name is/was. Thank God for cell phones with cameras these days. Back in my ecstasy days we didn't even have color screens.