If you hit them at just the right time while jumping around you can have them do a nifty dropkick! :P
Coincidentally, on the screen which I practiced doing that out of sheer boredom, I also found a glitch which allows an infinite number of sligs to be created and walk around - I remember counting up to 53, then controlling them all with a single Glukkon
If anyone wants a screenie I'll give one, I'll work out how to do it again - it was in one of the first brewery levels that looked a bit like this:
| _____________
Glukkon Spawner | Orb ________ crawling slig
| (Background passage)
^
|
Lift______________Pants Machine____________________Way out ->
P.S. If the diagram gets messed up I'll delete it :P