No substitutes for me.
I should have added that when I manage to scrape together a nice, tidy sum of discretionary income, I add to my cycle an intense 720ml eod megadose of fresh breast milk from the bank reserves of selective nurseries for unwed mothers. This is top-shelf, human grade stuff, and not some Chinese generic counterfeit (knocked-up is greater than, and not equal to, knocked-off). Sides can sometimes be a bitch (especially, the extreme drowsiness). However, for an extra fee, I can usually procure the soft services of a young, blonde dormitory wetnurse to perform sloppy fellatio for (i) increased positive synergies and (ii) stimulating that much sought after 3-D, blow-up from within effect.