Well, Bobby; there is not a doubt in my mind, or in the minds of hundreds of other people that I have met, Bigfoot does indeed prank with humans. It is NOT only Bigfoot that does that. Nearly all typical domestic animals in the South - except swine - are known to prank with humans, dogs and horses being the most obvious and repetitive.
The larger wild and domesticated primates are noted for their propensity in playing pranks on other animals as well as those of their kind. South American monkeys - wild and those kept as pets - are notorious for playing pranks on humans. If their pranks are directed at some human that has offended them, the pranks can be pretty nasty or even dangerous.
The humor in a particular prank is usually only appreciated by the entity that initiated it.
Bigfoot may work the night shift to obtain the "bread and butter" for he and his family, but I expect he takes time out for fun and recreation just like we do. Since they don't have television, radio, or I-phones, we are no doubt their prime entertainment when we go into their back yard. They are very intelligent, have a language of their own and do not, for good reason, care to directly associate with us. From that standpoint, they may be the last hominid standing after we've wiped ourselves out.