"Too bright to have recess? Run inside!" "Thank you!" "You're not welcome" (2, 5)
11A
Motored right into popular bar for the bathroom (5)
12A
Regularly skipped CEO initiation [weird type of wordplay] (9)
13A
Heard Senator Cruz is smelly [???] (7)
14A
Endlessly small baby having no head in the first place? [bad] (7)
16A
Aggressive-seeming bird is cuddle-muffin on the inside (3)
17A
Gave it another go with setter, moving forward [this just is not working] (7)
19A
Stops Sierra among believers in God (7)
21A
Messy row with equally messy Pigpen where you wouldn't want things to go down (5, 4)
24A
More than half of lamas following one southern religion (5)
26A
Had more than enough time between a break in Britain and returning [no] (3, 1, 3)
27A
Perhaps a board of crossword editors' legal charges Will read aloud (7)
28A
Members of the editorial staff in tryst!!! [please change] (11)
Down
1D
Share one's gossip (one's "tea") at first [misleading] (9)
2D
Abandon forgotten American Eagle in the heart of Greenwich, Connecticut (7)
3D
Torn up, cut in half, peeled and chopped up editor [:(] (9)
4D
Elon's large changes to leader of networking after Twitter's rebranding [that's gas] (5)
5D
The type of music Kendrick Lamar makes? Yes, it might help you feel [...ok] (7)
6D
Attended first parts of school assembly, taking intense nap [this is really smooth!] (3, 2)
7D
Mixed up records in the end caused "The Last Jedi" portion to be scrapped (4)
8D
Sly leers, almost, moving around a circle! (3, 5)
13D
It's got a scarecrow covered in crazy rats! [huh??] (5, 3)
14D
Starts to act up, delving into editors' notes: "Consider everyone solving - they're most likely people who wouldn't want to do a puzzle that makes any mention of headless babies" (9)
15D
Assorted Interests ultimately accepts hint... and screws up computer input (9)
18D
Capture Gattaca's secret race (7)
20D
Having fun size: "You are finally mine for the taking" (7)
22D
Green Mario Mushroom Ice Cream Holders (uncopyrighted) (3-2)
23D
When in turnover, ingredients of Newton (figs) were that undesirable (2, 3)
25D
Animal found in sticky substance without ass [get rid of "ass"] (4)