What are example of presidential democracy's?

i do not know. this question is too hard to answer, therefore i will not produce an answer and instead, type this ridiculous paragraph talking about how i ca not answer this question. i have no idea what a presidential democracy is, have never heard of one, and maybe shall never learn about it. sorry i disapointed you. please do not be angry with me. i was trying to be funny. if this is not funny to you i am sorry. you need to get a sense of humor and a life. Goodbye.