Little Johnny walked into his dad's bedroom one day only to catch him sitting on the side of his bed sliding a condom onto his penis in preparation for sex with his wife.
Johnny's father, in attempt to hide his full erection with a condom on it, bent over as if to look under the bed.
Little Johnny asked curiously ‘What ya doin dad?’ His father quickly replied,
‘I thought I saw a rat go underneath the bed.’
To which Little Johnny replied ‘What ya gonna do, screw him?’
