Delay no more.
I do love the minuscule amount of Chinese I have come across. Lots of word games and poetic license. "Delay no more" in Cantonese sounds a lot like fuck your mother (diu2 nei5 lou5 mou5), so is super suitable for a T-shirt slogan.
Late to this party, obviously, but thanks to Ross for prompting me to look it up, and to Cantodict for being so easy to use.
There's a signboard well placed in Sharp Street East, Causeway Bay that always has the same slogan, "Delay No More", posted on it. Here's a photo of the latest incarnation. Nothing u…