I find this really funny because of Elevator-Gate.
And they say feminists don't have a sense of humor.
The not funny part of Dawkins being the butt of a joke here is the false moral equivalence it somewhat sets up. Richard Dawkins having to throw away his little jar of honey prior to boarding a plane is not actually just like Rebecca Watson gently suggesting that men maybe should not proposition her in elevators after talks about the objectification of women in atheism.
Dawkins is being made fun of on the Internet for him publicly complaining about a trivial inconvenience to himself. Watson, on the other hand, received rape and death threats and aggressive male semi-stalkers, for taking issue with something that Dawkins framed as a trivial problem.