This is sort-of drunken kung-fu. Actual drunken kung-fu uses core strength to tilt and sway as if you were drunk, while maintaining perfect balance. You hold your hands as if they were filled with drinking cups to fight, and the whole thing is supposed to put the enemy off-guard.
The Jackie Chan movie Drunken Master is a pretty good interpretation of drunken kung-fu, except for the part where he has to get actually drunk to be good at it.
See full post here: P.Hos' Art2014-10-07.