Green’s Dictionary of Slang

percolate v.

1. (US, also perculate) to stroll, to wander around; thus percolating, walking around looking for sexual conquests [misuse of SE perambulate].

[US]Bossier Banner (Bellevue, LA) 16 Dec. 1/6: ‘The charge against you is vagrancy.’ [...] ‘Why do I percolate?’ demanded the prisoner at last. ‘I don’t know,’ replied the court [...] ‘You can now percolate out doors’.
G.V. Hobart Of Many Moods and Mters 84: ‘Well, you bes’ percolate!’ / ‘All right, goodbye,’ the tramp replies.
[US]C.E. Mulford Bar-20 xi: Let me see you perculate so lively that yore back’ll look like a ten-cent piece in five seconds.
[US]Z.N. Hurston ‘Story in Harlem Sl.’ in Novels and Stories (1995) 1001: Then he would give the pimp’s sign, and percolate on down the Avenue.
[US]Mezzrow & Wolfe Really the Blues 29: ‘Perculate you filthy bitch,’ some sweet man yelled to his partner.
[Aus]Argus (Melbourne) 15 Nov. 7/1: I’ll have to polish up the pie-plate and start percolatin’.
[US]S. Longstreet Flesh Peddlers (1964) 82: I’ll mull it over. James has hit the oil. Let’s all think [...] Meanwhile let’s percolate for tomorrow’s meeting.
[US]‘Touré’ Portable Promised Land (ms.) 49: Negroes percolatin everywhere, shoppin, drivin, sellin ice cream.

2. (US) uses of SE.

(a) (also perk) to run smoothly, esp. of an engine, by meton. used of a the pilot who is flying without problems.

[US]‘Blind Squire Turner’ [Teddy Darby] ‘Don’t Like the Way You Do’ 🎵 Now see you last night when you got in that Cadillac-8 / You know you done something wouldn’t percolate / Now listen here, baby, don’t like the way you do.
[US](con. WW1) E.C. Parsons Great Adventure 43: [I]n anything but the most favorable combination of circumstances, such as a perfectly perking motor (a great rarity) [...] keeping a Blériot under perfect control presented somewhat of a problem [Ibid.] 63: Much to my pleased surprise, I perked along without trouble until I got there.
[US](con. 1920s) Carmichael & Longstreet Sometimes I Wonder 154: It [home brew] seems to percolate your insides.
R. Charles Brother Ray 241: Gin lubricates me. Reefer mellows me. And between the two of them and some strong, black coffee, I perk along just fine.

(b) (also perk) to penetrate the mind.

[US]‘Max Brand’ ‘Above the Law’ in Coll. Stories (1994) 30: You’re the prize bonehead. Honey, does that begin to percolate?
[US]R. Starnes Another Mug for the Bier 42: I let these thoughts percolate while I drove through Washington.
[US]R. Blount Jr About Three Bricks Shy of a Load 17: You don’t have to drink too many shots and beers [...] before you begin to feel the frustrations perking all around you.

(c) to do something well.

[US]‘Hy Lit’ Hy Lit’s Unbelievable Dict. of Hip Words 30: percolate – [...] doing it extremely well.

(d) to happen.

[US](con. 1920s) ‘Harry Grey’ Hoods (1953) 92: What’s up? What’s percolating, Max?
[US]O. Hawkins Chili 11: Dice game percolatin’ to the left rear, slick talk popping out of everybody’s neck.