That "why are you comming at me" sounds suspicious, but maybe it's just me, or maybe the negletful parents that give a way their children to be killed when they escape over use it so much that when a nice one uses it after one of it's kids is dead one can't help but suspect that a "Go and kill the little one while yukkuri runs away!" scenario?
Of course, kinda has a ren & stimpy feel, or one of those dark comedies feel.
Hell i could even see it happening all cutesy and stuff with moving music, then "SPLAT" and disk scratch ruining the moment with the mother going O_O in shock.
Chances are that if he reaches her, he may end up splitting her up instead of bumping, while big, remember yukkuris aren't that sturdy because of the consistence of bean paste and the dough.
You would need them to be quite rubbery, at least, for it to be good enough to bump a speeding bike.
