Across
1
Environmental activist Thunberg
6
___ Day
11
"She ___ rock" (Cheap Trick lyric)
14
Flippant response to, "Why did you do that?!"
16
"Alas..."
18
Indicator of karate chops?
19
Control
20
Some Pontiacs
21
Elopes, say
24
Grenadine flavor
26
NBC sportscaster Mike
29
Stark portrayed by Sophie Turner
30
TIFF alternative
33
Sacred song
34
15 on a grandfather clock
35
Faults, perhaps
38
Let sleeping dogs ___
39
Flabbergast
41
Wafer brand commonly paired with banana pudding
42
Teller's partner
43
"Wicked Game" singer Chris
45
Short, stubby one
47
Unload the criticism
51
Heaped (on)
54
de Armas of "Blonde"
55
Screws (over)
59
Retort at someone who's blowing hot air... and a fitting quip about this puzzle
62
Helps a post go viral, for short
63
Holds back
64
49D
Simple vow
65
Almond alternative
66
Novices, informally
67
"Cleopatra and the ___" (painting by Michel Corneille the Elder)
Down
1
Smooth-talking
2
"The Way I Heard It" host Mike
3
Diabolical sort
4
Beta gamers
5
Fire sign?
6
Unreturned serve, in tennis
7
Parkland protectors
8
Made a booty call?
9
___ buco
10
Some Flying Clouds
12
Lower echelon of drunkenness
13
Texter's "Or, consider this..."
14
Top of the podium, symbolically
15
Rock hard
17
Console played with a motion controller
22
Jolly good transport
23
Shakira's don't lie
24
Cops trained in forensic science, for short
25
Most mountainous country in the Caribbean
27
"Crazy" singer Patsy
28
Dark cloud, say
30
Pressure gage units
31
Canadiens org.
32
Blue-haired character on "Bubble Guppies"
36
Tats (up)
37
Mexican mainstay
40
American activist Ralph
42
Twitter handle that can change ownership every four years
44
The A of CAD
46
Emulates the wolf in "Three Little Pigs"
48
Fashionably elegant
49
64A
One acquired after saying 64-Across
50
Rapper Kweli
51
One with fiery desire?
52
Miniscule amount
53
Fiery desire
56
Seed high in omega-3
57
Group one might shield from foul language
58
"Enough!"
60
Peat-forming ecosystem
61
Tunisian tennis star Jabeur, currently ranked No. 2 in the world after playing in the final match of the 2022 US Open
Hot Air Buffoon