The Permanent Booru

Score: 0.003

+ 5 fingers	334679
+ anthropomorphism	4524346
+ balls	1415068
+ blush	1363084
+ bodily fluids	1962726
+ character:knuckles the echidna	7799
+ clothing	2725787
+ creator:meowwabae	115
+ echidna	1291
+ erection	1142338
+ extreme size difference	12193
+ fingerjob	70
+ fingernails	14530
+ fingers	618699
+ footwear	371117
+ gender:male	3520365
+ genitals	2702613
+ gloves	298080
+ hair	2362819
+ handjob	81831
+ handwear	253591
+ human	33125
+ humanoid genitalia	533823
+ humanoid hands	124252
+ humanoid penis	541812
+ lying	536622
+ mammal	1304201
+ meta:digital media (artwork)	908300
+ meta:hi res	2890499
+ micro	37043
+ monotreme	3397
+ nails	68073
+ on back	318931
+ penile	620806
+ penis	2157010
+ rating:explicit	3746352
+ series:sega	109709
+ series:sonic the hedgehog	168843
+ sex	1407731
+ shoes	177029
+ size difference	472449
+ solo	3107031
+ species:echidna	9897
+ species:human	543323
+ species:mammal	4512636
+ species:monotreme	10804
+ spread legs	403562
+ spreading	481503
+ sweat	461156
+ sweatdrop	97259