boinks
Conks on head
Boinks is the third-person singular of boink, a playful or euphemistic term for having sex: He boinks her every chance he gets.
Boink can also mean to bonk or bump: She boinks him on the head with a rolled-up newspaper.
The sexual sense dominates contemporary usage.
Playful head strike
bonk
Playful head strike
thud · tap · knock · rap · plonk · plink · donk · ping · ding · boing
intercourse
Communication or sexual connection
bed · romp · fling · coupling · carnal · nookie · hanky-panky · tryst · rendezvous · affair
bonk
Playful head strike
knock · thwack · whack · bump · smack · clunk · thump · conk · strike · collision