hi guys ive searched google and havent found anything. i need a substance that can smash glass after i have applied and left it. i have thought about ammonia and iodine but i doubt its power, i need to be discrete while applying as to not alert the person being pranked any ideas?

So basically you want something you can smear on, wander off, and once it's dried out it will brick the glass, amirite?

This poses an interesting challenge - But off the top off my head I'd suggest a pyrophoric compound glued with some kind of volatile gel that won't leave a residue once it evaps. This in itself is fucking hard to do, but it would help if you could let us know the details of the target - E.g glass thickness, temper rating, what angle it's on etc. etc.

yes that is exactly what i need!!! the glass is aprox 3-4mm thick and is probably toughened but isnt laminated as for the angle is estimate its on a 70 degree backwards tilt, by that i mean when yyou stand against the side i ned to place the charge the top of the glass is furthest away from my body.

also i need for it not to be detected i will have to engage in conversation with the target as i apply the substance so i was planning on putting it inside a nailpolish bottle and applying while talking as a distraction

I really can't see this working, but feel free to work out a process anyway.

But I'll give you some clue words:

Alum
Pyrophoric
Glycerol

"sucess favors the bold"

lol as much as i would love to go strap 100 punds of nitro glycerine to the glass i cant

*pounds sorry typo

Nobody's talking about NG.

that comment wasnt dedicated to you ghost but to power strokes comment succsess favours the BOLD i took that as if u want the job done u no be bold about it???