My favourite get-clean-quick remedy where there's no shower is actually a small well-used washcloth (so it gets rough and very absorbent), as hot water as I can stand, and no soap. Rinse cloth, wring out, wash with it fast while it's still hot, repeat.
The hot cloth means you practically dry as you go, and no water or soap splashing around. Works fine on fresh sweat.
Winter riding is much less about badassery and much more about bundle-uppery. - malkin
1995 Kona Cinder Cone commuterFrankenbike/Selle Italia SLR Lady Gel Flow
2008 white Nakamura Summit Custom mtb/Terry Falcon X
2000 Schwinn Fastback Comp road bike/Specialized Jett