probably a case of khan just imitating pac. i have seen pac doing this habit even before he got to train with roach. another habit that i like is when jmm touching his shoes with his gloves while being introduced before a fight and will time his getting up with the announcement of his name.
A quirk is associated with oddity and I don't see anything weird about sending out a good wish. I'm sure most fighters do the same as Sergio; he just happens to verbalize it. Martinez's real quirk is him repeatedly blowing a snot rocket during a fight.
[ame]http://www.youtube.com/watch?v=h8xzfAq3FuQ[/ame] 2:30 Like 10 times in 15 seconds. What a nutter.