Dirty old man

Or, a man who goes out with a woman far younger then he”

Lāu gû chia̍h iù-koaⁿ-sún

Literally: An old bull eating tender bamboo shoots.

Burn one’s bridges

Kiô kòe, kóai-á tàn tiāu

Literally: Throwing away the walking-stick after crossing the bridge.

Don’t be such a pushover

Nńg thô͘ chhim ku̍t

Literally: “soft soil gets dug deep”

I.e., if you’re too nice, people will take advantage of you

Can take a lot of crap; forbearing

Pak-tn̂g chin khoa (“Have a broad stomach/guts”)

As in other East Asian languages, pak-tn̂g is used in a number of expressions about a person’s character:

Pak-tn̂g sè (“have a narrow/small stomach or guts” = whiny, can’t take much hardship or discomfort)
Pak-tn̂g chhián (“shallow stomach or guts” = superficial, shallow), and its opposite
Pak-tn̂g chhim (“deep stomach or guts”)

My old lady

Gún tau hit-ê chú-pn̄g7 — ê

Literally: the one that makes the food at my house

Shady, sketchy (people)

Put-sam-put-sù (ê)

Example:

Kau-pôe tio̍h8 chi̍t8-kóa put-sam-put-sù ê pêng-iú

Hang out with a bad crowd; associate with some shady characters

Mixed-race (person)

From least offensive to most offensive:

Hūn-hiat ê [“mixed-blood”]
Lām-hoeh [“mixed-up blood”]
pòaⁿ-hóng-á [?]

Of course, there’s always “mutt”:
cha̍p8-chéng-káu
Literally: “dog of ten kinds”

Update: Added the missing eight tone marker to chap8-cheng2-kau2. As you may have noticed, I’ve been having trouble getting the eighth tone to show up in WordPress lately.

Also, I just realized the chap8 of chap8-cheng2-kau2 could also be–and probably is–the chap8 meaning “mixed, confused,” as in hok8-chap8.

Words can hurt

Ōe ū saⁿ chiam la̍k8 kak, kak kak ē siong lâng

Literally: Words have three points and six horns, and each horn can hurt someone.

“She’s got a nice personality”

(In other words, she’s not very pretty)

 

I seⁿ-liáu chiok an-chôan

She looks very safe.

 

Seⁿ-liáu hiân-hōe

(She) looks hospitable.

 

Siú kau-thong ê kui-chek

Follows all the traffic rules

 

Some more here.

Pick up girls, hit on girls

phāⁿ chhit-á