The Permanent Booru

Score: 0.021

+ 1 female	254816
+ 1 male	166010
+ all fours	138270
+ anal	581356
+ anal penetration	454290
+ anthropomorphism	4530491
+ anus	756132
+ ass	1471014
+ ass shot	230
+ ass up	70821
+ balls	1416899
+ big anus	15640
+ bodily fluids	1965307
+ booru:e621	1475840
+ bottom	891
+ boy	7068
+ buttsex	1100
+ character:echidna	1420
+ character:knuckles the echidna	7807
+ clothing	2729492
+ creator:monotreme	1003
+ creator:squish	150
+ cum	982004
+ display	406
+ erection	1143453
+ feet	681309
+ footwear	371598
+ from behind	60193
+ gaysex	294
+ gender:female	3643454
+ gender:male	3524676
+ genital fluids	1396520
+ genitalia	2327573
+ genitals	2706312
+ gloves	298463
+ handwear	253989
+ humanoid penis	542493
+ large ass	385083
+ legwear	491515
+ male only	168453
+ male/male	743086
+ mammal	1304452
+ man	3614
+ medium:simple background	1623961
+ medium:video game	218021
+ medium:white background	351965
+ meta:junk tag	332228
+ monotreme	3398
+ mostly nude	153181
+ nude	1720758
+ on knees	1002
+ orgasm	343013
+ penetration	1138297
+ penis	2159572
+ presenting	330313
+ presenting anus	64077
+ presenting hindquarters	154300
+ rating:explicit	3750939
+ series:sonic the hedgehog	169067
+ sex	1409266
+ socks	111759
+ soles	95388
+ solo	3110967
+ sonic	7260
+ species:echidna	9907
+ species:mammal	4517882
+ species:monotreme	10815
+ spikes	131601
+ spread ass	29591
+ spreading	482072
+ squish (artist)	48
+ studio:sega	78772
+ testicles	443312
+ video games	917086
+ young	349432