How do you ingest LSD?

It used to be called blotter acid and its on a small piece of paper you stick on your tongue it usually had a picture on it like mickey mouse or a design. and it doesnt matter on top or under the tongue most people swallowed the paper it is very small some forms of it would disolve. :) there was one around when I was a teen and yes I tried it it was called blue dragon and it made me hallucinate it was a trip