A while back, I posted a link from Menage A 3, a comic which includes a girl who has a weird condition that when she sees penises she imagines that they're tentacles and kicks guys in the groin as a result. We have two new comics where she does some groin kicking (plus one where it was implied). If you want to see the back story, you can back up further (but there isn't really that much bb in the comic, as a whole). In this little bit, she was set off by seeing a girl wearing a big strap-on. Here are three of the comics from that bit, in order:

Implied groin kicking:
http://www.menagea3.net/strips-ma3/take_you_all_the_way
Actual groin kicking 1:
http://www.menagea3.net/strips-ma3/very_nice
Actual groin kicking 2: (Note that what's being shown is that the same girl from the previous comic suddenly appears and kicks the guy in the groin, not the girl he's talking to)
http://www.menagea3.net/strips-ma3/take_you_all_the_way