Green’s Dictionary of Slang

stroke v.2

[fig. use of SE stroke]

1. (US prison) to curry favour with a more powerful inmate or with the authorities.

[US]Maledicta V:1+2 (Summer + Winter) 264: Then, there’s the segment of prison society that seeks favor with the authorities or with anyone holding power over it. They stroke or grip the power brokers by playing up to them in hopes of receiving favors, now or in the future.

2. (US campus) to trick, to deceive.

[US] P. Munro Sl. U.
[US]C. Stella Eddie’s World 90: I’m wondering [...] was that all it was, bullshit? There’s something in it for you, you weren’t stroking me about him.

3. (UK juv.) to steal [the thief’s hands run gently over the desired object].

OnLine Dict. of Playground Sl. [Internet] stroke n. to steal.