I used to do that all the time with my friends when we'd get baked. We'd fill up a few bottles with The Works(I think it works the same as drain-o, it has to have a certain kind of acid in it I think.) Then we'd make a bunch of aluminum foil balls and carry them with us, take the bottles around the neighborhood and make the bombs when we got to where we wanted to explode them. I did one once where I went in someone's yard and they had a driveway going to their garage. I went up to the garage and put a bomb like 1 foot from the door and when it blew it dented the fucking garage door. We came back the next day and saw it, it was crazy.

My friend did some once when I wasn't there, he put a couple bombs on someone's porch and when they exploded, the acid melted the peoples lawn chairs. It ended up in the newspaper(but he didn't get caught.)

I feel kinda bad for doing these things now, even though they were funny as shit back then.