Go ahead watch it. I'll wait.
Did you notice all the links you can click like "Impeach Obama" and "why Birthers are ridiculed"? The optimal link there by the way is "donate money." The reason Birthers are ridiculed is really simple. They are at the least naive and at the most fools driven by hate, fear, and attention seeking.
Now let me give you the whole clip. Obama at White House Correspondents' Dinner 2010. The original quote starts at about 1 minute 40 seconds in. The actual quote is sarcasm, and as is the case with all speakers at every White House Correspondents' Dinner, it is the speaker's job to make fun of himself, others in the audience, and politics in general. Obama is making fun of the Birther movement.
You may notice the entire clip is over 17 minutes long. The edited misleading clip is just 21 seconds. Too bad the person who would mislead you couldn't cut the laughter totally just the laughter following the punchline making fun of the whole Birther idea.
If you don't want to appear foolish, then spend a little time looking for reality. Try Googling a neutral statement like "where was Obama born." Guess what, you get all the evidence that birthers want to ignore and claim as faked. Googling a non-neutral statement like "proof that Obama was born in Kenya" will get you a little more biased result, although it also gets the fact check groups like Snopes. (By the way saying Snopes is wrong does not make it so. You need proof.)
Stupid is, as the movie Forest Gump points out, as Stupid does. Don't be stupid.