In guard you can shake him with your hips
You can also push on his elbow if he's not centered (combine it with the hips shaking to make him off balanced) and go to side guard / back take
I mostly do it with the reverse kimura grip
But I don't think it's dick move, depends on the gym, I used to moan about it, but after being ''knee on the throated'', it became very standard.
And the more they are agressive, the more it helps you to do that technique.
Also, in the gi, you also have to realise that he basically gives you a sleeve grip in your guard