depends on who's asking.
if it's somebody who I never talk to who comes up and acts like we're buddy's and asked "hey man, what are you on?"
I like to invade their space and make them feel uncomfortable, since they felt comfortable enough to act like we're buddies, and I ask them when the last time they either did cocaine, drove drunk, or smoked weed... since it's cool to discuss illegal drug use with strangers. then tell them I use whey protein and creatine and 'andro' from gnc.
if it's somebody I know, i'll say i'm on hrt because I used andro as a kid.
if it's somebody I know who KNOWS about PED, i'll tell them i'm on test and sometimes tren.