Haha, just so used to it, lol. But yeah, i didn't even get the kinda "bummed out" next day that I always had with most of the cath. derivatives, with the notable exception of butylone and mephedrone. Long story short 150mg 4-FA oral, 50mg intranasal booster after 35 minutes and I had mild closed-eye visuals- geometrics, bubbly shapes, and the like. About an hour and a half in I smoked a j, at which point the experience actually became quite psychedelic. Open-eye geometrics and "glowy" colors, similar to how I've heard mescaline-type trails described.
Eventually fell asleep listening to Dick's Picks Vol 12 (gotta love the Dead), and the next morning I woke up feeling amazing. Very rested, energetic, and cheerful which is strange because usually I look like absolute hell until I get a cup of coffee in me. I'm no neuroscientist, but it definitely didn't appear to be very neurotoxic.