The written form for it is 、太った男の人の上に戻します。
Fat man
come on Munch kin
i gather you want to fight some one, unfortunately a lot of colloquialisms don't translate.
kakkate koi...!
.... WA futoi desu
'Debu na neko' means 'fat cat' in Japanese. 'Futteita neko' can also be used.
motte konaide
If you want to write it, Давай-давай, толстый! Pronounced: Davai-davai, tolsty. Translated back it means something like: "Go ahead, fat man", which I hope reflects what you had in mind.
''ASEDREGALLIO'' IS BEST FRIEND IN JAPANESE MAN
Anata WA debu.
otoko
fat ape shibo saru baby ape akachan saru