If you guys think a knicker sniffer is bad then you live in a bubble, lol.

Read The Encyclopedia of Unusual Sex Practices by Brenda Love.

Chrematistophilia - Arousal from being charged for sex or robbed.
Thalpotentiginy - Arousal caused by heat or warm weather.
Hyphephilia - Arousal from touching fabrics.
Jactitation - Refers to those who become aroused from bragging about their own sexual exploits.

And thats the reasonably "nice" ones.