Japanese wordplay(語呂合わせ/goroawase)

1564「人殺し」(ひとごろし/hitogoroshi/murder; murderer)
1(kunyomi)-hito 5(onyomi)-go 6(onyomi)-ro 4(onyomi)-shi

427「死にな」(しにな/shinina/Don't die)
4(onyomi)-shi 2(onyomi)-ni 7(kunyomi)-na

648 虫歯 (むしば/mushiba/cavity;decayed tooth)
6(kunyomi)-mu 4(onyomi)-shi 8(onyomi)-ba

450「よごれ」(yogore/dirt; filth)
4(kunyomi)-yo 5(onyomi)-go 0(onyomi)-re

931「くさい」(kusai/smelly)
9(onyomi)-ku 3(onyomi)-sa 1(onyomi)-i

315 「最後 」(さいご/saigo/last)
3(onyomi)-sa 1(onyomi)-i 5(onyomi)-go

While messaging, Japanese schoolgirls also use the numbers like this（o→0、あい(ai)→I→1）

0840「おはよう」(ohayou/Good morning!)
0(English reading)-o 8(onyomi)-ha 4(kunyomi)-yo

14106「愛してる」(あいしてる/aishiteru/I love you)
1(onyomi)-ai 4(onyomi)-shi
10(English reading)-ten* 6(onyomi)-ro*

724106「何してる」(なにしてる/nanishiteru/What are you doing?)
7(kunyomi)-na 2(onyomi)-ni 4(onyomi)-shi
10(English reading)-ten* 6(onyomi)-ro*

49「至急」(しきゅう/shikyuu/urgent)
4(onyomi)-shi 9(onyomi)-kyu

888「ハハハ」(hahaha/LOL)
8(onyomi)-ha

889「早く」(はやく/hayaku/quickly)
8(onyomi)-ha 8(kunyomi)-ya 9(onyomi)-ku

0906「遅れる」(おくれる/okureru/I'll be late)
0(English reading)-o 9(onyomi)-ku 0(onyomi)-re 6(onyomi)-ro*

3470「さよなら」(sayonara/Good bye!)
3(onyomi)-sa 4(kunyomi)-yo 7(kunyomi)-na 0(onyomi)-re*

*: slightly changed ones

There is also a song written by Hideo Suwa and all the lyrics of that song are comprimised of goroawase.

I think I can also write my name as a goroawase.
Rock (ロク/roku) - 69
6(onyomi)-ro 9(onyomi)-ku kekeke