According to Toriyama
, he watched infomercials about bargain sales.
edited 13th Feb '16 6:34:28 AM by unnoun
Okay, you're right about the Vegeta not keeping his word, but Bulma's proposal wasn't out of her own interest in martial arts. Goten and Trunk's fighting skills had severely deteriorated(they couldn't even get the fusion dance right at first) and she was trying (unsuccessfully) to convince Vegeta to train Trunks again to offset it.
But still, you're right, it would be perfectly in character for Vegeta to make such an outburst and then train Bra anyway. Especially if Pan became a motivator the way Goten did for Trunks.
Buldogue's lawyerNot as unreasonable as it sounds. Sonic already borrows heavily from Dragon Ball.
My Tumblr. Currently side-by-side liveblogging Digimon Adventure, sub vs dub.Do remember that Dragon Ball Z works on nonsensical biology already - Cell somehow has the Namekian regeneration, Freeza's race's super survivor status, the Saiyan zenkai, the abilities of the fighters whose cells were used in his creation...
So, yeah, simply put, genetics in DBZ make zero sense, so it's pointless to bring biology up at all.
himitsu keisatsu seifu chokuzoku kokka hoanbu na no da himitsu keisatsu yami ni magireru supai katsudou torishimari

Actually, none of what you described happened, because Vegeta wasn't at the lookout (he flew away, probably crying, from the site of the Cell Games) and Goku explicitly said he was not coming back when they tried to bring him back.
Furthermore, training Trunks has nothing to do with Vegeta wanting to fight alone, so why would it ever matter?
His refusal to train Bulma makes sense. Bulma wanting to train at all, does not. Bulma wants nothing to do with martial arts herself - and she knows she would need to put titanic amounts of effort, which she'd rather put into something more interesting and useful like designing new cool shit to make more cash with.
So, simply put: Vegeta is prone to throwing bitch fits he goes back on later.
himitsu keisatsu seifu chokuzoku kokka hoanbu na no da himitsu keisatsu yami ni magireru supai katsudou torishimari