Changed my name for this as I'm a bit embarrased 
Last night me and DP were at the train station and he was talking to one of the station workers about a trains arrival time, for some stupid reason I had this massive urge to poke DP in the eye and I could'nt control it, I poked him in the eye for a laugh but he was furious as I showed us both up in front of the station man, DP then stormed off and the station man gave me a funny look and everyone was looking at us. Dp hasnt spoken to me since, I was just trying to have a laugh but I realise that what I did was wrong but DP says he is sick of how childish I am and he said he's had enough. I dont know why I do these things, I just get huge urges to do stupid things sometimes, I have done ever since been little.
My mum said I was in the wrong and should change the way I am but my friend says it sounds like DP is just being grumpy (which he is alot of the time), how would your DP's have reacted in this situation? What should I do/say? I cant promise him Ill never do something like this again.