Poor you and poor Benjy!
My Lab had occasional epileptic seizures - the were so infrequent that we never put her on any meds. but everyone around us knew about them and knew how to react if she had one ...
Of course this could be something else, so you need to get him checked out, but don't assume the worst !!
Make sure you log everything that happens and how long it lasts and how he reacts etc because that it always very helpful in diagnosing and treating any of these things ...
With any luck, it will be one of those isolated things that sometimes happen to your 'children' ... they get over-heated or are coming down with something ....
Barley and Bramble send kisses !!