There are people who just want to have fun and there are also people who simply want to make fun of others. The month of April perhaps is a time when many would do April fool prank on others.
It is interesting to note that there are prank gags that produce farts. Ever heard of a farting machine?
There are even political gags now-a-days. Here's one that depicts the US president. Would you touch his finger?
Well, if April fool pranks can make you laugh, just be careful you wouldn't offend anyone.