The Permanent Booru

Score: 0.029

+ 1 male	166009
+ anal	580108
+ anal beads	16244
+ anal fingering	16316
+ anal penetration	453612
+ anal play	130
+ anal sex	203701
+ anal stimulation	4154
+ anthropomorphism	4522174
+ anus	754067
+ ass	1467201
+ assplay	48
+ backsack	143099
+ balls	1414417
+ beads	5222
+ biped	545131
+ blep	29291
+ board:/v/	15375
+ booru:e621	1475840
+ boy	7067
+ breasts	2330675
+ character:echidna	1420
+ character:knuckles the echidna	7793
+ clothed	1429386
+ clothing	2724537
+ creator:monotreme	1003
+ creator:squish	150
+ dildo	112397
+ feet	679537
+ fem knuckles	9
+ feminine male	87126
+ fingering	66995
+ footwear	370884
+ from behind	60181
+ furry	827850
+ futanari	156265
+ gender:female	3635298
+ gender:intersex	370471
+ gender:male	3516781
+ genitals	2700768
+ half-closed eyes	254997
+ humor	58117
+ knuckles	317
+ knucklestheechidna	23
+ large ass	385078
+ large breasts	825380
+ legwear	490583
+ lol	2850
+ looking at viewer	1230637
+ looking back	394389
+ male only	168046
+ male/male	741807
+ man	3614
+ medium:high resolution	3019389
+ medium:video game	218021
+ meta:junk tag	332228
+ meta:nsfw	58420
+ monotreme	3397
+ narrowed eyes	371712
+ nude	1716627
+ nudity	89985
+ panties	218225
+ penetration	1136139
+ penetrative sex	8094
+ point of view	507114
+ porn	7859
+ presenting	329559
+ presenting anus	63902
+ presenting hindquarters	153946
+ purple eyes	199214
+ rating:explicit	3741828
+ reverse trap	51
+ series:sonic the hedgehog	168420
+ sex	1406306
+ sex toy	188668
+ site:4chan.org	20382
+ sitting	433806
+ socks	111526
+ soles	95131
+ solo	3104896
+ sonic	7258
+ sonicthehedgehog	270
+ species:echidna	9892
+ species:mammal	4510766
+ species:monotreme	10798
+ squish (artist)	48
+ straight	292593
+ studio:sega	78772
+ testicles	442556
+ tongue	1149204
+ tongue out	728426
+ toys	1532
+ underwear	497988
+ video games	917085
+ website:chan style imageboards	16531
+ yiff	16522
+ young	348929