peng, adj. — Green’s Dictionary of Slang

peng adj.

[? pong v.² (1): orig. used of high-grade cannabis with its pronounced odour, thus broadened as a general term of excellence, thus peng ting, a sexy female]

(UK black) good, used in a variety of non-specific but positive senses.

2005		Jade LB Keisha the Sket (2021) 19: He was 1 peng boi I had been chatin 2 4 tym.
2005		Jade LB Keisha the Sket (2021) 89: ‘Ur a peng ting u kno. Pengest ting ive seen’.
2010		www.grimepedia.co.uk 🌐 Peng Food is a CD released by the artist Frisco, but it is also a larger showcase for the grime label Alwayz Recordings.
2011		IOL News (Western Cape) 19 Apr. 🌐 Common phrases used by British teenagers include ‘peng’ meaning a person who looks good and ‘fomo’, an abbreviation of fear of missing out.
2014		Grizzy ‘Mandem Salute’ 🎵 [of drugs] Nittys want the drugs they be feeling it / It’s that peng peng they be feeling it.
2017		hubpages.com ‘Roadman Slang 4 Jun. 🌐 Peng [...] This word is only ever used to describe girls, while most London slang is mainly ambiguous. It is the most sexually-connotating slang word heard in London, comparable to ‘sexy’. It is commonly used by fairly unattractive guys in a desperate manner, which has lead to it also carrying an air of ‘you're way out of my league’.

In compounds

peng ting (n.)

(UK black) a very attractive female.

2014		Wiley ‘Step 21🎵 I just wanna kick back with the grade in a hot tub / Blue Ciroq, peng tings in the hot tub.
2015		Section Boyz ‘Trapping Ain’t Dead’ 🎵 I know ’nuff peng tings in a rave / Gyal ah get the beat, they don’t wanna behave.
2017		67 ‘Waps’ 🎵 Everywhere pengtings screaming out ‘Gang!’ / Anywhere, pengtings wanna do gang.
2020		G. Krauze What They Was 10: It’s not like man’s gonna chirpse some peng tings and get their digits on the way to doing a move.